<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_us-gaap_SegmentReportingAbstract_3498B41E954154EE8C7E31369937456D_label_en-US" xlink:label="lab_us-gaap_SegmentReportingAbstract_24EF791E7E935A8DB30E6BBCA5F0A76C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_24EF791E7E935A8DB30E6BBCA5F0A76C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingAbstract_24EF791E7E935A8DB30E6BBCA5F0A76C" xlink:to="lab_us-gaap_SegmentReportingAbstract_24EF791E7E935A8DB30E6BBCA5F0A76C" xlink:type="arc" />
    <link:label id="lab_ktos_SignificantCustomersDisclosureTextBlock_DD0B3CD23924F5A05B00313699378F53_verboseLabel_en-US" xlink:label="lab_ktos_SignificantCustomersDisclosureTextBlock_B08CCB2BE50D5C3A92C9551214DF7378" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Significant Customers</link:label>
    <link:label id="lab_ktos_SignificantCustomersDisclosureTextBlock_DD0B3CD23924F5A05B00313699378F53_label_en-US" xlink:label="lab_ktos_SignificantCustomersDisclosureTextBlock_B08CCB2BE50D5C3A92C9551214DF7378" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Customers Disclosure [Text Block]</link:label>
    <link:label id="lab_ktos_SignificantCustomersDisclosureTextBlock_DD0B3CD23924F5A05B00313699378F53_documentation_en-US" xlink:label="lab_ktos_SignificantCustomersDisclosureTextBlock_B08CCB2BE50D5C3A92C9551214DF7378" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Significant Customers Disclosure [Text Block]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_SignificantCustomersDisclosureTextBlock" xlink:label="loc_ktos_SignificantCustomersDisclosureTextBlock_B08CCB2BE50D5C3A92C9551214DF7378" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_SignificantCustomersDisclosureTextBlock_B08CCB2BE50D5C3A92C9551214DF7378" xlink:to="lab_ktos_SignificantCustomersDisclosureTextBlock_B08CCB2BE50D5C3A92C9551214DF7378" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_2F2801E52C817CA0716F7411A292BB48_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_EBE6AF61B3715E45A58E74172E679DD6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_EBE6AF61B3715E45A58E74172E679DD6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_EBE6AF61B3715E45A58E74172E679DD6" xlink:to="lab_us-gaap_EarningsPerShareAbstract_EBE6AF61B3715E45A58E74172E679DD6" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_550617AED50D322CE6877411A2925FB9_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_71E2F8C01F2E5CE69615EE5ED1374026" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_550617AED50D322CE6877411A2925FB9_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_71E2F8C01F2E5CE69615EE5ED1374026" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_71E2F8C01F2E5CE69615EE5ED1374026" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_71E2F8C01F2E5CE69615EE5ED1374026" xlink:to="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_71E2F8C01F2E5CE69615EE5ED1374026" xlink:type="arc" />
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_B0475BB3F67CD4F70D337411A292D8C5_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6376C1455AFB5B41AA7BAD02ACF47147" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Antidilutive Securities [Axis]</link:label>
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_B0475BB3F67CD4F70D337411A292D8C5_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6376C1455AFB5B41AA7BAD02ACF47147" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6376C1455AFB5B41AA7BAD02ACF47147" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6376C1455AFB5B41AA7BAD02ACF47147" xlink:to="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_6376C1455AFB5B41AA7BAD02ACF47147" xlink:type="arc" />
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesNameDomain_0684E5D555F500A1B4A27411A2929E36_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesNameDomain_73A7C85CF7DC56B18657EC6755DDA0E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Antidilutive Securities, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesNameDomain_0684E5D555F500A1B4A27411A2929E36_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesNameDomain_73A7C85CF7DC56B18657EC6755DDA0E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_73A7C85CF7DC56B18657EC6755DDA0E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_73A7C85CF7DC56B18657EC6755DDA0E8" xlink:to="lab_us-gaap_AntidilutiveSecuritiesNameDomain_73A7C85CF7DC56B18657EC6755DDA0E8" xlink:type="arc" />
    <link:label id="lab_ktos_StockOptionsAndStockAwardsMember_96EE020D09A6BC56EDE77411A2924F9A_terseLabel_en-US" xlink:label="lab_ktos_StockOptionsAndStockAwardsMember_4A86771D03695FD1B5BF7CE468A8A20C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock options and awards</link:label>
    <link:label id="lab_ktos_StockOptionsAndStockAwardsMember_96EE020D09A6BC56EDE77411A2924F9A_label_en-US" xlink:label="lab_ktos_StockOptionsAndStockAwardsMember_4A86771D03695FD1B5BF7CE468A8A20C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Options and Stock Awards [Member]</link:label>
    <link:label id="lab_ktos_StockOptionsAndStockAwardsMember_96EE020D09A6BC56EDE77411A2924F9A_documentation_en-US" xlink:label="lab_ktos_StockOptionsAndStockAwardsMember_4A86771D03695FD1B5BF7CE468A8A20C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock Options and Stock Awards [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_StockOptionsAndStockAwardsMember" xlink:label="loc_ktos_StockOptionsAndStockAwardsMember_4A86771D03695FD1B5BF7CE468A8A20C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_StockOptionsAndStockAwardsMember_4A86771D03695FD1B5BF7CE468A8A20C" xlink:to="lab_ktos_StockOptionsAndStockAwardsMember_4A86771D03695FD1B5BF7CE468A8A20C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_A19E29001F6F89FB864B7411A292975A_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF1480DBA24851ED9BF03B06CB30426A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]</link:label>
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_A19E29001F6F89FB864B7411A292975A_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF1480DBA24851ED9BF03B06CB30426A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF1480DBA24851ED9BF03B06CB30426A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF1480DBA24851ED9BF03B06CB30426A" xlink:to="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF1480DBA24851ED9BF03B06CB30426A" xlink:type="arc" />
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_D467369D23EC5BBF27B37411A292AF73_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_B8299687FBF856C59BF1998569C6FEEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Antidilutive securities excluded from computation of EPS (in shares)</link:label>
    <link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_D467369D23EC5BBF27B37411A292AF73_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_B8299687FBF856C59BF1998569C6FEEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_B8299687FBF856C59BF1998569C6FEEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_B8299687FBF856C59BF1998569C6FEEB" xlink:to="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_B8299687FBF856C59BF1998569C6FEEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureAbstract_EEF42C27D04AFD0A4C0C34E39CB8B07B_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_BACE1E53E93058F29554DCDB0CEAD04D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_BACE1E53E93058F29554DCDB0CEAD04D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract_BACE1E53E93058F29554DCDB0CEAD04D" xlink:to="lab_us-gaap_DebtDisclosureAbstract_BACE1E53E93058F29554DCDB0CEAD04D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentTable_98F4FC6B3DBDE6DA38F934E39CB80418_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_1F94DA08027E5D45A7A2B4F87A216107" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentTable_98F4FC6B3DBDE6DA38F934E39CB80418_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_1F94DA08027E5D45A7A2B4F87A216107" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_1F94DA08027E5D45A7A2B4F87A216107" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable_1F94DA08027E5D45A7A2B4F87A216107" xlink:to="lab_us-gaap_DebtInstrumentTable_1F94DA08027E5D45A7A2B4F87A216107" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateAxis_5710631B130ACE4B3BD634E39CB9FC9F_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis_8C43D22611BA5F38B45E7E74236B0741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Rate [Axis]</link:label>
    <link:label id="lab_us-gaap_VariableRateAxis_5710631B130ACE4B3BD634E39CB9FC9F_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis_8C43D22611BA5F38B45E7E74236B0741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Rate [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_8C43D22611BA5F38B45E7E74236B0741" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateAxis_8C43D22611BA5F38B45E7E74236B0741" xlink:to="lab_us-gaap_VariableRateAxis_8C43D22611BA5F38B45E7E74236B0741" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateDomain_57DD86ECD4CF327BB3ED34E39CB966B2_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain_C301545712855D28BF468B547A390896" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:label id="lab_us-gaap_VariableRateDomain_57DD86ECD4CF327BB3ED34E39CB966B2_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain_C301545712855D28BF468B547A390896" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_C301545712855D28BF468B547A390896" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateDomain_C301545712855D28BF468B547A390896" xlink:to="lab_us-gaap_VariableRateDomain_C301545712855D28BF468B547A390896" xlink:type="arc" />
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_3A25FE0638D3A7DCD7BD34E39CB98608_terseLabel_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_25DCAA54CD8956A4ACC0D2036CB76E46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIBOR rate</link:label>
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_3A25FE0638D3A7DCD7BD34E39CB98608_label_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_25DCAA54CD8956A4ACC0D2036CB76E46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">London Interbank Offered Rate (LIBOR) [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_25DCAA54CD8956A4ACC0D2036CB76E46" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_25DCAA54CD8956A4ACC0D2036CB76E46" xlink:to="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_25DCAA54CD8956A4ACC0D2036CB76E46" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_CFF82BC148FE1F2C7A1D34E39CB9D534_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_4C1EED58F0D35FA49C47A6DECCD37DE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_CFF82BC148FE1F2C7A1D34E39CB9D534_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_4C1EED58F0D35FA49C47A6DECCD37DE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_4C1EED58F0D35FA49C47A6DECCD37DE7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4C1EED58F0D35FA49C47A6DECCD37DE7" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_4C1EED58F0D35FA49C47A6DECCD37DE7" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_2AE55E0FA81E7E0D89C834E39CB90030_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_5D5732B7E29058A187A3FCCF66FDB284" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_2AE55E0FA81E7E0D89C834E39CB90030_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_5D5732B7E29058A187A3FCCF66FDB284" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_5D5732B7E29058A187A3FCCF66FDB284" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_5D5732B7E29058A187A3FCCF66FDB284" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_5D5732B7E29058A187A3FCCF66FDB284" xlink:type="arc" />
    <link:label id="lab_us-gaap_LoansPayableMember_0539323746BAB537CBFD34E39CB9B211_terseLabel_en-US" xlink:label="lab_us-gaap_LoansPayableMember_75FDB159C0AA5BA08A62A01D53484ECE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">10-year term loan</link:label>
    <link:label id="lab_us-gaap_LoansPayableMember_0539323746BAB537CBFD34E39CB9B211_label_en-US" xlink:label="lab_us-gaap_LoansPayableMember_75FDB159C0AA5BA08A62A01D53484ECE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Payable [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_75FDB159C0AA5BA08A62A01D53484ECE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansPayableMember_75FDB159C0AA5BA08A62A01D53484ECE" xlink:to="lab_us-gaap_LoansPayableMember_75FDB159C0AA5BA08A62A01D53484ECE" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_723578B0F252607AF1E634E39CB97602_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_96D81572603E5020B679906332A91A37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_723578B0F252607AF1E634E39CB97602_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_96D81572603E5020B679906332A91A37" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_96D81572603E5020B679906332A91A37" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_96D81572603E5020B679906332A91A37" xlink:to="lab_us-gaap_DebtInstrumentLineItems_96D81572603E5020B679906332A91A37" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_BB76CF6FD22D0265D1773535C18AF9CC_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_7AC71A0F59185899AB5B323F146CD832" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument, face amount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_BB76CF6FD22D0265D1773535C18AF9CC_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_7AC71A0F59185899AB5B323F146CD832" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_7AC71A0F59185899AB5B323F146CD832" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_7AC71A0F59185899AB5B323F146CD832" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_7AC71A0F59185899AB5B323F146CD832" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentMaturityPeriod_214E6647FE1AF2ED58BA34E39CB9A630_verboseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentMaturityPeriod_0A3580762D9851F6858F4276CC49A8DF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Maturity period</link:label>
    <link:label id="lab_ktos_DebtInstrumentMaturityPeriod_214E6647FE1AF2ED58BA34E39CB9A630_label_en-US" xlink:label="lab_ktos_DebtInstrumentMaturityPeriod_0A3580762D9851F6858F4276CC49A8DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Maturity Period</link:label>
    <link:label id="lab_ktos_DebtInstrumentMaturityPeriod_214E6647FE1AF2ED58BA34E39CB9A630_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentMaturityPeriod_0A3580762D9851F6858F4276CC49A8DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Maturity Period</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentMaturityPeriod" xlink:label="loc_ktos_DebtInstrumentMaturityPeriod_0A3580762D9851F6858F4276CC49A8DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentMaturityPeriod_0A3580762D9851F6858F4276CC49A8DF" xlink:to="lab_ktos_DebtInstrumentMaturityPeriod_0A3580762D9851F6858F4276CC49A8DF" xlink:type="arc" />
    <link:label id="lab_ktos_NumberofSubsidiaryOwned_54AC29CFE2CEA6FC9C4134E39CBA3187_terseLabel_en-US" xlink:label="lab_ktos_NumberofSubsidiaryOwned_31DF4D65121D5415BBDF4FF2909EDA72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of subsidiaries acquired</link:label>
    <link:label id="lab_ktos_NumberofSubsidiaryOwned_54AC29CFE2CEA6FC9C4134E39CBA3187_label_en-US" xlink:label="lab_ktos_NumberofSubsidiaryOwned_31DF4D65121D5415BBDF4FF2909EDA72" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Subsidiary Owned</link:label>
    <link:label id="lab_ktos_NumberofSubsidiaryOwned_54AC29CFE2CEA6FC9C4134E39CBA3187_documentation_en-US" xlink:label="lab_ktos_NumberofSubsidiaryOwned_31DF4D65121D5415BBDF4FF2909EDA72" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Subsidiary Owned</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_NumberofSubsidiaryOwned" xlink:label="loc_ktos_NumberofSubsidiaryOwned_31DF4D65121D5415BBDF4FF2909EDA72" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_NumberofSubsidiaryOwned_31DF4D65121D5415BBDF4FF2909EDA72" xlink:to="lab_ktos_NumberofSubsidiaryOwned_31DF4D65121D5415BBDF4FF2909EDA72" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebt_BA7643BFB514BD1977E634E39CBA7E64_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_82F27F4D1D3A5AB6B921C7D5347502CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying Amount</link:label>
    <link:label id="lab_us-gaap_LongTermDebt_BA7643BFB514BD1977E634E39CBA7E64_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_82F27F4D1D3A5AB6B921C7D5347502CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_82F27F4D1D3A5AB6B921C7D5347502CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt_82F27F4D1D3A5AB6B921C7D5347502CC" xlink:to="lab_us-gaap_LongTermDebt_82F27F4D1D3A5AB6B921C7D5347502CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_C49E160638475F40BE6534E39CBA81BB_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_E2BA9B320FE4520D9CFDEB6F0E246086" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Quarterly installment payment - principal</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_C49E160638475F40BE6534E39CBA81BB_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_E2BA9B320FE4520D9CFDEB6F0E246086" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Periodic Payment, Principal</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_E2BA9B320FE4520D9CFDEB6F0E246086" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_E2BA9B320FE4520D9CFDEB6F0E246086" xlink:to="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_E2BA9B320FE4520D9CFDEB6F0E246086" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A49FC11B8DC69EB57B3234E39CBA98A5_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E63D32DAF59353D8B2C78546E7D8059A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis spread on variable rate</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_A49FC11B8DC69EB57B3234E39CBA98A5_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E63D32DAF59353D8B2C78546E7D8059A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E63D32DAF59353D8B2C78546E7D8059A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E63D32DAF59353D8B2C78546E7D8059A" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E63D32DAF59353D8B2C78546E7D8059A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_611A3E1DBAC68658C62B207664215675_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_611A3E1DBAC68658C62B207664215675" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_611A3E1DBAC68658C62B207664215675" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_611A3E1DBAC68658C62B207664215675" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_611A3E1DBAC68658C62B207664215675" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F2DAAFDC5288A3232D7E2076642272AD_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F2DAAFDC5288A3232D7E2076642272AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Financial Statements [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F2DAAFDC5288A3232D7E2076642272AD_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F2DAAFDC5288A3232D7E2076642272AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfCondensedFinancialStatementsTable" xlink:label="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F2DAAFDC5288A3232D7E2076642272AD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F2DAAFDC5288A3232D7E2076642272AD" xlink:to="lab_us-gaap_ScheduleOfCondensedFinancialStatementsTable_F2DAAFDC5288A3232D7E2076642272AD" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeniorNotesMember_8C8A1B1C2610537D3852207664227921_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_8C8A1B1C2610537D3852207664227921" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior notes</link:label>
    <link:label id="lab_us-gaap_SeniorNotesMember_8C8A1B1C2610537D3852207664227921_label_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_8C8A1B1C2610537D3852207664227921" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_8C8A1B1C2610537D3852207664227921" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorNotesMember_8C8A1B1C2610537D3852207664227921" xlink:to="lab_us-gaap_SeniorNotesMember_8C8A1B1C2610537D3852207664227921" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentAxis_BB62140640217A4624D120766422C193_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_BB62140640217A4624D120766422C193" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentAxis_BB62140640217A4624D120766422C193_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_BB62140640217A4624D120766422C193" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_BB62140640217A4624D120766422C193" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_BB62140640217A4624D120766422C193" xlink:to="lab_us-gaap_DebtInstrumentAxis_BB62140640217A4624D120766422C193" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_C51C0488321E6D9F8AEA20766422EF3E_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_C51C0488321E6D9F8AEA20766422EF3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_C51C0488321E6D9F8AEA20766422EF3E_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_C51C0488321E6D9F8AEA20766422EF3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_C51C0488321E6D9F8AEA20766422EF3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_C51C0488321E6D9F8AEA20766422EF3E" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_C51C0488321E6D9F8AEA20766422EF3E" xlink:type="arc" />
    <link:label id="lab_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4_terseLabel_en-US" xlink:label="lab_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">7% Senior Notes due 2019</link:label>
    <link:label id="lab_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4_label_en-US" xlink:label="lab_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Seven Percent Senior Notes Due 2019 [Member]</link:label>
    <link:label id="lab_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4_documentation_en-US" xlink:label="lab_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Seven Percent Senior Notes Due 2019 [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_SevenPercentSeniorNotesDue2019Member" xlink:label="loc_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4" xlink:to="lab_ktos_SevenPercentSeniorNotesDue2019Member_93048E3CBEDDB9855C0F20766422D6D4" xlink:type="arc" />
    <link:label id="lab_dei_LegalEntityAxis_2C36964B09C26231C35920766422AE2D_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_2C36964B09C26231C35920766422AE2D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_2C36964B09C26231C35920766422AE2D_label_en-US" xlink:label="lab_dei_LegalEntityAxis_2C36964B09C26231C35920766422AE2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_2C36964B09C26231C35920766422AE2D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_2C36964B09C26231C35920766422AE2D" xlink:to="lab_dei_LegalEntityAxis_2C36964B09C26231C35920766422AE2D" xlink:type="arc" />
    <link:label id="lab_dei_EntityDomain_E8A3C51D427DB239E6A420766422B64E_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_E8A3C51D427DB239E6A420766422B64E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:label id="lab_dei_EntityDomain_E8A3C51D427DB239E6A420766422B64E_label_en-US" xlink:label="lab_dei_EntityDomain_E8A3C51D427DB239E6A420766422B64E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_E8A3C51D427DB239E6A420766422B64E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_E8A3C51D427DB239E6A420766422B64E" xlink:to="lab_dei_EntityDomain_E8A3C51D427DB239E6A420766422B64E" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsidiariesMember_8CCE66815AD979C28E5320766423CB67_terseLabel_en-US" xlink:label="lab_us-gaap_SubsidiariesMember_8CCE66815AD979C28E5320766423CB67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiaries</link:label>
    <link:label id="lab_us-gaap_SubsidiariesMember_8CCE66815AD979C28E5320766423CB67_label_en-US" xlink:label="lab_us-gaap_SubsidiariesMember_8CCE66815AD979C28E5320766423CB67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsidiaries [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SubsidiariesMember" xlink:label="loc_us-gaap_SubsidiariesMember_8CCE66815AD979C28E5320766423CB67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsidiariesMember_8CCE66815AD979C28E5320766423CB67" xlink:to="lab_us-gaap_SubsidiariesMember_8CCE66815AD979C28E5320766423CB67" xlink:type="arc" />
    <link:label id="lab_us-gaap_ParentCompanyMember_6F247AEB41DB12343F3D207664238C09_terseLabel_en-US" xlink:label="lab_us-gaap_ParentCompanyMember_6F247AEB41DB12343F3D207664238C09" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Parent Company</link:label>
    <link:label id="lab_us-gaap_ParentCompanyMember_6F247AEB41DB12343F3D207664238C09_label_en-US" xlink:label="lab_us-gaap_ParentCompanyMember_6F247AEB41DB12343F3D207664238C09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Parent Company [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ParentCompanyMember" xlink:label="loc_us-gaap_ParentCompanyMember_6F247AEB41DB12343F3D207664238C09" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ParentCompanyMember_6F247AEB41DB12343F3D207664238C09" xlink:to="lab_us-gaap_ParentCompanyMember_6F247AEB41DB12343F3D207664238C09" xlink:type="arc" />
    <link:label id="lab_us-gaap_GuarantorSubsidiariesMember_0EC6D9439B60B39D6F45207664232D15_terseLabel_en-US" xlink:label="lab_us-gaap_GuarantorSubsidiariesMember_0EC6D9439B60B39D6F45207664232D15" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiary Guarantors on a Combined Basis</link:label>
    <link:label id="lab_us-gaap_GuarantorSubsidiariesMember_0EC6D9439B60B39D6F45207664232D15_label_en-US" xlink:label="lab_us-gaap_GuarantorSubsidiariesMember_0EC6D9439B60B39D6F45207664232D15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Subsidiaries [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GuarantorSubsidiariesMember" xlink:label="loc_us-gaap_GuarantorSubsidiariesMember_0EC6D9439B60B39D6F45207664232D15" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuarantorSubsidiariesMember_0EC6D9439B60B39D6F45207664232D15" xlink:to="lab_us-gaap_GuarantorSubsidiariesMember_0EC6D9439B60B39D6F45207664232D15" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonGuarantorSubsidiariesMember_2E784EBBA19F4E818CC2207664239991_terseLabel_en-US" xlink:label="lab_us-gaap_NonGuarantorSubsidiariesMember_2E784EBBA19F4E818CC2207664239991" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-Guarantors on a Combined Basis</link:label>
    <link:label id="lab_us-gaap_NonGuarantorSubsidiariesMember_2E784EBBA19F4E818CC2207664239991_label_en-US" xlink:label="lab_us-gaap_NonGuarantorSubsidiariesMember_2E784EBBA19F4E818CC2207664239991" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Guarantor Subsidiaries [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NonGuarantorSubsidiariesMember" xlink:label="loc_us-gaap_NonGuarantorSubsidiariesMember_2E784EBBA19F4E818CC2207664239991" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonGuarantorSubsidiariesMember_2E784EBBA19F4E818CC2207664239991" xlink:to="lab_us-gaap_NonGuarantorSubsidiariesMember_2E784EBBA19F4E818CC2207664239991" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConsolidationItemsAxis_881D61ED1291EFAA793D207DB67BC9AC_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationItemsAxis_881D61ED1291EFAA793D207DB67BC9AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation Items [Axis]</link:label>
    <link:label id="lab_us-gaap_ConsolidationItemsAxis_881D61ED1291EFAA793D207DB67BC9AC_label_en-US" xlink:label="lab_us-gaap_ConsolidationItemsAxis_881D61ED1291EFAA793D207DB67BC9AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_881D61ED1291EFAA793D207DB67BC9AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationItemsAxis_881D61ED1291EFAA793D207DB67BC9AC" xlink:to="lab_us-gaap_ConsolidationItemsAxis_881D61ED1291EFAA793D207DB67BC9AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConsolidationItemsDomain_A51184379CE850D2199F207DB92ED538_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationItemsDomain_A51184379CE850D2199F207DB92ED538" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:label id="lab_us-gaap_ConsolidationItemsDomain_A51184379CE850D2199F207DB92ED538_label_en-US" xlink:label="lab_us-gaap_ConsolidationItemsDomain_A51184379CE850D2199F207DB92ED538" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_A51184379CE850D2199F207DB92ED538" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationItemsDomain_A51184379CE850D2199F207DB92ED538" xlink:to="lab_us-gaap_ConsolidationItemsDomain_A51184379CE850D2199F207DB92ED538" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConsolidationEliminationsMember_FA72A7D522C16950C1BD20766423A0F9_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationEliminationsMember_FA72A7D522C16950C1BD20766423A0F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Eliminations</link:label>
    <link:label id="lab_us-gaap_ConsolidationEliminationsMember_FA72A7D522C16950C1BD20766423A0F9_label_en-US" xlink:label="lab_us-gaap_ConsolidationEliminationsMember_FA72A7D522C16950C1BD20766423A0F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation, Eliminations [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConsolidationEliminationsMember" xlink:label="loc_us-gaap_ConsolidationEliminationsMember_FA72A7D522C16950C1BD20766423A0F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationEliminationsMember_FA72A7D522C16950C1BD20766423A0F9" xlink:to="lab_us-gaap_ConsolidationEliminationsMember_FA72A7D522C16950C1BD20766423A0F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_96F10EC334DA4D72C2BF2076642315BD_terseLabel_en-US" xlink:label="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_96F10EC334DA4D72C2BF2076642315BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements, Captions [Line Items]</link:label>
    <link:label id="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_96F10EC334DA4D72C2BF2076642315BD_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_96F10EC334DA4D72C2BF2076642315BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements, Captions [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CondensedFinancialStatementsCaptionsLineItems" xlink:label="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_96F10EC334DA4D72C2BF2076642315BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CondensedFinancialStatementsCaptionsLineItems_96F10EC334DA4D72C2BF2076642315BD" xlink:to="lab_us-gaap_CondensedFinancialStatementsCaptionsLineItems_96F10EC334DA4D72C2BF2076642315BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_94DE46925814BA745FB920766423B71C_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_94DE46925814BA745FB920766423B71C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_94DE46925814BA745FB920766423B71C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_94DE46925814BA745FB920766423B71C" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_94DE46925814BA745FB920766423B71C" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_1F2AF1092D2880F1928020766423D3E4_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_1F2AF1092D2880F1928020766423D3E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ownership percentage</link:label>
    <link:label id="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_1F2AF1092D2880F1928020766423D3E4_label_en-US" xlink:label="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_1F2AF1092D2880F1928020766423D3E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Ownership Percentage by Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_1F2AF1092D2880F1928020766423D3E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_1F2AF1092D2880F1928020766423D3E4" xlink:to="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_1F2AF1092D2880F1928020766423D3E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsAbstract_1D08BFBB805B8BC49D1F20766424BC31_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_1D08BFBB805B8BC49D1F20766424BC31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_us-gaap_AssetsAbstract_1D08BFBB805B8BC49D1F20766424BC31_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_1D08BFBB805B8BC49D1F20766424BC31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_1D08BFBB805B8BC49D1F20766424BC31" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_1D08BFBB805B8BC49D1F20766424BC31" xlink:to="lab_us-gaap_AssetsAbstract_1D08BFBB805B8BC49D1F20766424BC31" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_4D94AB1F6DDC8A63942220766424AB3C_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_4D94AB1F6DDC8A63942220766424AB3C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current assets:</link:label>
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_4D94AB1F6DDC8A63942220766424AB3C_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_4D94AB1F6DDC8A63942220766424AB3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_4D94AB1F6DDC8A63942220766424AB3C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrentAbstract_4D94AB1F6DDC8A63942220766424AB3C" xlink:to="lab_us-gaap_AssetsCurrentAbstract_4D94AB1F6DDC8A63942220766424AB3C" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_76A3631AF842741A83C820766424D852_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_76A3631AF842741A83C820766424D852" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_76A3631AF842741A83C820766424D852_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_76A3631AF842741A83C820766424D852" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_76A3631AF842741A83C820766424D852" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_76A3631AF842741A83C820766424D852" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_76A3631AF842741A83C820766424D852" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_96BC9D1EED927A5C91CA207664249A4C_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_96BC9D1EED927A5C91CA207664249A4C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, net</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_96BC9D1EED927A5C91CA207664249A4C_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_96BC9D1EED927A5C91CA207664249A4C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_96BC9D1EED927A5C91CA207664249A4C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_96BC9D1EED927A5C91CA207664249A4C" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_96BC9D1EED927A5C91CA207664249A4C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DueFromAffiliateCurrent_BB34EA6106170E6A777B207664241D5E_terseLabel_en-US" xlink:label="lab_us-gaap_DueFromAffiliateCurrent_BB34EA6106170E6A777B207664241D5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amounts due from affiliated companies</link:label>
    <link:label id="lab_us-gaap_DueFromAffiliateCurrent_BB34EA6106170E6A777B207664241D5E_label_en-US" xlink:label="lab_us-gaap_DueFromAffiliateCurrent_BB34EA6106170E6A777B207664241D5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due from Affiliate, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DueFromAffiliateCurrent" xlink:label="loc_us-gaap_DueFromAffiliateCurrent_BB34EA6106170E6A777B207664241D5E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DueFromAffiliateCurrent_BB34EA6106170E6A777B207664241D5E" xlink:to="lab_us-gaap_DueFromAffiliateCurrent_BB34EA6106170E6A777B207664241D5E" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_907B996DFF90C25E438A207664247EC4_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_907B996DFF90C25E438A207664247EC4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventoried costs</link:label>
    <link:label id="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_907B996DFF90C25E438A207664247EC4_label_en-US" xlink:label="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_907B996DFF90C25E438A207664247EC4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Net of Allowances, Customer Advances and Progress Billings</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings" xlink:label="loc_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_907B996DFF90C25E438A207664247EC4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_907B996DFF90C25E438A207664247EC4" xlink:to="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_907B996DFF90C25E438A207664247EC4" xlink:type="arc" />
    <link:label id="lab_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A_terseLabel_en-US" xlink:label="lab_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A_label_en-US" xlink:label="lab_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash And Cash Equivalents At Carrying Value, Prepaid Expense And Other Assets, Current</link:label>
    <link:label id="lab_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A_documentation_en-US" xlink:label="lab_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted Cash And Cash Equivalents At Carrying Value, Prepaid Expense And Other Assets, Current</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A" xlink:to="lab_ktos_RestrictedCashAndCashEquivalentsAtCarryingValuePrepaidExpenseAndOtherAssetsCurrent_1B8074547D7028778FE520766424E83A" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsCurrent_661EDC09DBA104410B7E207664248BEC_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_661EDC09DBA104410B7E207664248BEC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrent_661EDC09DBA104410B7E207664248BEC_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_661EDC09DBA104410B7E207664248BEC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_661EDC09DBA104410B7E207664248BEC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_661EDC09DBA104410B7E207664248BEC" xlink:to="lab_us-gaap_AssetsCurrent_661EDC09DBA104410B7E207664248BEC" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_061BC298F639374A164520766424C649_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_061BC298F639374A164520766424C649" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment, net</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_061BC298F639374A164520766424C649_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_061BC298F639374A164520766424C649" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_061BC298F639374A164520766424C649" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_061BC298F639374A164520766424C649" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_061BC298F639374A164520766424C649" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_6E9A0FF1DF2E83F012232076642485DD_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_6E9A0FF1DF2E83F012232076642485DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_Goodwill_6E9A0FF1DF2E83F012232076642485DD_label_en-US" xlink:label="lab_us-gaap_Goodwill_6E9A0FF1DF2E83F012232076642485DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_6E9A0FF1DF2E83F012232076642485DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_6E9A0FF1DF2E83F012232076642485DD" xlink:to="lab_us-gaap_Goodwill_6E9A0FF1DF2E83F012232076642485DD" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_ACA26CACE4F0FF5212EF207664246D36_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_ACA26CACE4F0FF5212EF207664246D36" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, net</link:label>
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_ACA26CACE4F0FF5212EF207664246D36_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_ACA26CACE4F0FF5212EF207664246D36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets, Net (Excluding Goodwill)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_ACA26CACE4F0FF5212EF207664246D36" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_ACA26CACE4F0FF5212EF207664246D36" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_ACA26CACE4F0FF5212EF207664246D36" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_747BFE063AD82AF6CAD920766424DDD2_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_747BFE063AD82AF6CAD920766424DDD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment in subsidiaries</link:label>
    <link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_747BFE063AD82AF6CAD920766424DDD2_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_747BFE063AD82AF6CAD920766424DDD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_747BFE063AD82AF6CAD920766424DDD2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_747BFE063AD82AF6CAD920766424DDD2" xlink:to="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_747BFE063AD82AF6CAD920766424DDD2" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_910BE5E9E902865E10C9207664248FBB_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_910BE5E9E902865E10C9207664248FBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsNoncurrent_910BE5E9E902865E10C9207664248FBB_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_910BE5E9E902865E10C9207664248FBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_910BE5E9E902865E10C9207664248FBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_910BE5E9E902865E10C9207664248FBB" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_910BE5E9E902865E10C9207664248FBB" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_715B719A4C2ACE4A0BF020766425697E_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_715B719A4C2ACE4A0BF020766425697E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label id="lab_us-gaap_Assets_715B719A4C2ACE4A0BF020766425697E_label_en-US" xlink:label="lab_us-gaap_Assets_715B719A4C2ACE4A0BF020766425697E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_715B719A4C2ACE4A0BF020766425697E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_715B719A4C2ACE4A0BF020766425697E" xlink:to="lab_us-gaap_Assets_715B719A4C2ACE4A0BF020766425697E" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_9A7C15EAD0D6F9A16D5520766425A782_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_9A7C15EAD0D6F9A16D5520766425A782" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities and Stockholders&#8217; Equity</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_9A7C15EAD0D6F9A16D5520766425A782_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_9A7C15EAD0D6F9A16D5520766425A782" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_9A7C15EAD0D6F9A16D5520766425A782" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_9A7C15EAD0D6F9A16D5520766425A782" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_9A7C15EAD0D6F9A16D5520766425A782" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_0A2A18CC93063C2E9376207664252227_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_0A2A18CC93063C2E9376207664252227" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current liabilities:</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_0A2A18CC93063C2E9376207664252227_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_0A2A18CC93063C2E9376207664252227" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_0A2A18CC93063C2E9376207664252227" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0A2A18CC93063C2E9376207664252227" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_0A2A18CC93063C2E9376207664252227" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableCurrent_9E880A158AE32E59F2ED20766425D1AB_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_9E880A158AE32E59F2ED20766425D1AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:label id="lab_us-gaap_AccountsPayableCurrent_9E880A158AE32E59F2ED20766425D1AB_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_9E880A158AE32E59F2ED20766425D1AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_9E880A158AE32E59F2ED20766425D1AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_9E880A158AE32E59F2ED20766425D1AB" xlink:to="lab_us-gaap_AccountsPayableCurrent_9E880A158AE32E59F2ED20766425D1AB" xlink:type="arc" />
    <link:label id="lab_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1_terseLabel_en-US" xlink:label="lab_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued expenses</link:label>
    <link:label id="lab_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1_label_en-US" xlink:label="lab_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Expenses, Current</link:label>
    <link:label id="lab_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1_documentation_en-US" xlink:label="lab_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued Expenses, Current</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_AccruedExpensesCurrent" xlink:label="loc_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1" xlink:to="lab_ktos_AccruedExpensesCurrent_BC0B9FC0B09FADF8D06E2076642530E1" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_B7061CF254826EA61BE12076642569BE_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_B7061CF254826EA61BE12076642569BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued compensation</link:label>
    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_B7061CF254826EA61BE12076642569BE_label_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_B7061CF254826EA61BE12076642569BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee-related Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_B7061CF254826EA61BE12076642569BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_B7061CF254826EA61BE12076642569BE" xlink:to="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_B7061CF254826EA61BE12076642569BE" xlink:type="arc" />
    <link:label id="lab_us-gaap_BillingsInExcessOfCost_2327B8FF171292107F0520766425E53C_terseLabel_en-US" xlink:label="lab_us-gaap_BillingsInExcessOfCost_2327B8FF171292107F0520766425E53C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Billings in excess of costs and earnings on uncompleted contracts</link:label>
    <link:label id="lab_us-gaap_BillingsInExcessOfCost_2327B8FF171292107F0520766425E53C_label_en-US" xlink:label="lab_us-gaap_BillingsInExcessOfCost_2327B8FF171292107F0520766425E53C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Billings in Excess of Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_BillingsInExcessOfCost" xlink:label="loc_us-gaap_BillingsInExcessOfCost_2327B8FF171292107F0520766425E53C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BillingsInExcessOfCost_2327B8FF171292107F0520766425E53C" xlink:to="lab_us-gaap_BillingsInExcessOfCost_2327B8FF171292107F0520766425E53C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DueToAffiliateCurrent_37E964C51D4FA609B03D20766425CE97_terseLabel_en-US" xlink:label="lab_us-gaap_DueToAffiliateCurrent_37E964C51D4FA609B03D20766425CE97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amounts due to affiliated companies</link:label>
    <link:label id="lab_us-gaap_DueToAffiliateCurrent_37E964C51D4FA609B03D20766425CE97_label_en-US" xlink:label="lab_us-gaap_DueToAffiliateCurrent_37E964C51D4FA609B03D20766425CE97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due to Affiliate, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DueToAffiliateCurrent" xlink:label="loc_us-gaap_DueToAffiliateCurrent_37E964C51D4FA609B03D20766425CE97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DueToAffiliateCurrent_37E964C51D4FA609B03D20766425CE97" xlink:to="lab_us-gaap_DueToAffiliateCurrent_37E964C51D4FA609B03D20766425CE97" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilitiesCurrent_30F7FBEA2C5DE6B77149207664253E20_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_30F7FBEA2C5DE6B77149207664253E20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current liabilities</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesCurrent_30F7FBEA2C5DE6B77149207664253E20_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_30F7FBEA2C5DE6B77149207664253E20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_30F7FBEA2C5DE6B77149207664253E20" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_30F7FBEA2C5DE6B77149207664253E20" xlink:to="lab_us-gaap_OtherLiabilitiesCurrent_30F7FBEA2C5DE6B77149207664253E20" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A74D236C46C355EEA7602076642570FE_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A74D236C46C355EEA7602076642570FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current liabilities of discontinued operations</link:label>
    <link:label id="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A74D236C46C355EEA7602076642570FE_label_en-US" xlink:label="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A74D236C46C355EEA7602076642570FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A74D236C46C355EEA7602076642570FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A74D236C46C355EEA7602076642570FE" xlink:to="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent_A74D236C46C355EEA7602076642570FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrent_F97CDF76679F3D544226207664257C8B_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_F97CDF76679F3D544226207664257C8B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrent_F97CDF76679F3D544226207664257C8B_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_F97CDF76679F3D544226207664257C8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_F97CDF76679F3D544226207664257C8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_F97CDF76679F3D544226207664257C8B" xlink:to="lab_us-gaap_LiabilitiesCurrent_F97CDF76679F3D544226207664257C8B" xlink:type="arc" />
    <link:label id="lab_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB_verboseLabel_en-US" xlink:label="lab_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, net of current portion</link:label>
    <link:label id="lab_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB_label_en-US" xlink:label="lab_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Debt And Unamortized Premium, Noncurrent</link:label>
    <link:label id="lab_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB_documentation_en-US" xlink:label="lab_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long Term Debt And Unamortized Premium, Noncurrent</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_LongTermDebtAndUnamortizedPremiumNoncurrent" xlink:label="loc_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB" xlink:to="lab_ktos_LongTermDebtAndUnamortizedPremiumNoncurrent_268ACD2C1E9C3D1AAFFC20766425DCCB" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_8AB5170A35F03A08498420766425EB83_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_8AB5170A35F03A08498420766425EB83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other long-term liabilities</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_8AB5170A35F03A08498420766425EB83_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_8AB5170A35F03A08498420766425EB83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_8AB5170A35F03A08498420766425EB83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_8AB5170A35F03A08498420766425EB83" xlink:to="lab_us-gaap_OtherLiabilitiesNoncurrent_8AB5170A35F03A08498420766425EB83" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_23ECCA5873FEE2520C9E207664250A68_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_23ECCA5873FEE2520C9E207664250A68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-current liabilities of discontinued operations</link:label>
    <link:label id="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_23ECCA5873FEE2520C9E207664250A68_label_en-US" xlink:label="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_23ECCA5873FEE2520C9E207664250A68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_23ECCA5873FEE2520C9E207664250A68" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_23ECCA5873FEE2520C9E207664250A68" xlink:to="lab_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent_23ECCA5873FEE2520C9E207664250A68" xlink:type="arc" />
    <link:label id="lab_us-gaap_Liabilities_AC595F3E1A6AF53D0E1120766425855B_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_AC595F3E1A6AF53D0E1120766425855B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label id="lab_us-gaap_Liabilities_AC595F3E1A6AF53D0E1120766425855B_label_en-US" xlink:label="lab_us-gaap_Liabilities_AC595F3E1A6AF53D0E1120766425855B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_AC595F3E1A6AF53D0E1120766425855B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_AC595F3E1A6AF53D0E1120766425855B" xlink:to="lab_us-gaap_Liabilities_AC595F3E1A6AF53D0E1120766425855B" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8F230CC35F5B50C5626A20766426FB8D_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8F230CC35F5B50C5626A20766426FB8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total stockholders&#8217; equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8F230CC35F5B50C5626A20766426FB8D_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8F230CC35F5B50C5626A20766426FB8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8F230CC35F5B50C5626A20766426FB8D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8F230CC35F5B50C5626A20766426FB8D" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_8F230CC35F5B50C5626A20766426FB8D" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_E95DEDE39CC6CC72C899207664266539_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_E95DEDE39CC6CC72C899207664266539" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities and stockholders&#8217; equity</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_E95DEDE39CC6CC72C899207664266539_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_E95DEDE39CC6CC72C899207664266539" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_E95DEDE39CC6CC72C899207664266539" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_E95DEDE39CC6CC72C899207664266539" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_E95DEDE39CC6CC72C899207664266539" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_9807DEB004EDF329BCB5B09ECB194670_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_9807DEB004EDF329BCB5B09ECB194670" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_9807DEB004EDF329BCB5B09ECB194670" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_9807DEB004EDF329BCB5B09ECB194670" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_9807DEB004EDF329BCB5B09ECB194670" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_2CD71F92C5106BDDC314B09ECB19DCD7_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_2CD71F92C5106BDDC314B09ECB19DCD7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_2CD71F92C5106BDDC314B09ECB19DCD7_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_2CD71F92C5106BDDC314B09ECB19DCD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_2CD71F92C5106BDDC314B09ECB19DCD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_2CD71F92C5106BDDC314B09ECB19DCD7" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_2CD71F92C5106BDDC314B09ECB19DCD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_217A8603D1E251AF056CB09ECB19AB1C_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_217A8603D1E251AF056CB09ECB19AB1C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net loss</link:label>
    <link:label id="lab_us-gaap_NetIncomeLoss_217A8603D1E251AF056CB09ECB19AB1C_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_217A8603D1E251AF056CB09ECB19AB1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_217A8603D1E251AF056CB09ECB19AB1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_217A8603D1E251AF056CB09ECB19AB1C" xlink:to="lab_us-gaap_NetIncomeLoss_217A8603D1E251AF056CB09ECB19AB1C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_25397E22040CD835CD78B09ECB1939E9_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_25397E22040CD835CD78B09ECB1939E9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Less: Loss from discontinued operations</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_25397E22040CD835CD78B09ECB1939E9_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_25397E22040CD835CD78B09ECB1939E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_25397E22040CD835CD78B09ECB1939E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_25397E22040CD835CD78B09ECB1939E9" xlink:to="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_25397E22040CD835CD78B09ECB1939E9" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7C0FD99B6CD03DBF1F1DB09ECB19DC9C_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7C0FD99B6CD03DBF1F1DB09ECB19DC9C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss from continuing operations</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7C0FD99B6CD03DBF1F1DB09ECB19DC9C_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7C0FD99B6CD03DBF1F1DB09ECB19DC9C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7C0FD99B6CD03DBF1F1DB09ECB19DC9C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7C0FD99B6CD03DBF1F1DB09ECB19DC9C" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_7C0FD99B6CD03DBF1F1DB09ECB19DC9C" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_30073CE7CB29E87389ACB09ECB19B572_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_30073CE7CB29E87389ACB09ECB19B572" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile loss from continuing operations to net cash used in operating activities from continuing operations:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_30073CE7CB29E87389ACB09ECB19B572_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_30073CE7CB29E87389ACB09ECB19B572" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_30073CE7CB29E87389ACB09ECB19B572" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_30073CE7CB29E87389ACB09ECB19B572" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_30073CE7CB29E87389ACB09ECB19B572" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_4A56B390DEB0F4477BC8B09ECB1A45A5_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_4A56B390DEB0F4477BC8B09ECB1A45A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_4A56B390DEB0F4477BC8B09ECB1A45A5_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_4A56B390DEB0F4477BC8B09ECB1A45A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_4A56B390DEB0F4477BC8B09ECB1A45A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortization_4A56B390DEB0F4477BC8B09ECB1A45A5" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortization_4A56B390DEB0F4477BC8B09ECB1A45A5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensation_F3ADE0655BEF0E836F28B09ECB1A2DD2_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_F3ADE0655BEF0E836F28B09ECB1A2DD2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_F3ADE0655BEF0E836F28B09ECB1A2DD2_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_F3ADE0655BEF0E836F28B09ECB1A2DD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_F3ADE0655BEF0E836F28B09ECB1A2DD2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_F3ADE0655BEF0E836F28B09ECB1A2DD2" xlink:to="lab_us-gaap_ShareBasedCompensation_F3ADE0655BEF0E836F28B09ECB1A2DD2" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_C8E013DA0D57FA823944B09ECB1AF389_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_C8E013DA0D57FA823944B09ECB1AF389" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes</link:label>
    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_C8E013DA0D57FA823944B09ECB1AF389_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_C8E013DA0D57FA823944B09ECB1AF389" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_C8E013DA0D57FA823944B09ECB1AF389" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_C8E013DA0D57FA823944B09ECB1AF389" xlink:to="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_C8E013DA0D57FA823944B09ECB1AF389" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfDeferredCharges_917F5D1E923DF79BD1DDB09ECB1A0A1D_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDeferredCharges_917F5D1E923DF79BD1DDB09ECB1A0A1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of deferred financing costs</link:label>
    <link:label id="lab_us-gaap_AmortizationOfDeferredCharges_917F5D1E923DF79BD1DDB09ECB1A0A1D_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDeferredCharges_917F5D1E923DF79BD1DDB09ECB1A0A1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Deferred Charges</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AmortizationOfDeferredCharges" xlink:label="loc_us-gaap_AmortizationOfDeferredCharges_917F5D1E923DF79BD1DDB09ECB1A0A1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfDeferredCharges_917F5D1E923DF79BD1DDB09ECB1A0A1D" xlink:to="lab_us-gaap_AmortizationOfDeferredCharges_917F5D1E923DF79BD1DDB09ECB1A0A1D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_DFA7CF5D59C3F1874ACFB09ECB1ABC41_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_DFA7CF5D59C3F1874ACFB09ECB1ABC41" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of discount on Senior Secured Notes</link:label>
    <link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_DFA7CF5D59C3F1874ACFB09ECB1ABC41_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_DFA7CF5D59C3F1874ACFB09ECB1ABC41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Debt Discount (Premium)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_DFA7CF5D59C3F1874ACFB09ECB1ABC41" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfDebtDiscountPremium_DFA7CF5D59C3F1874ACFB09ECB1ABC41" xlink:to="lab_us-gaap_AmortizationOfDebtDiscountPremium_DFA7CF5D59C3F1874ACFB09ECB1ABC41" xlink:type="arc" />
    <link:label id="lab_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2_terseLabel_en-US" xlink:label="lab_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss on extinguishment of debt</link:label>
    <link:label id="lab_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2_label_en-US" xlink:label="lab_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss On Extinguishment Of Debt, Operating Activities</link:label>
    <link:label id="lab_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2_documentation_en-US" xlink:label="lab_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss On Extinguishment Of Debt, Operating Activities</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_LossOnExtinguishmentOfDebtOperatingActivities" xlink:label="loc_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2" xlink:to="lab_ktos_LossOnExtinguishmentOfDebtOperatingActivities_9D940B047CE5DD442616B09ECB1A36B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_63A4AD2037932D0E34F1B09ECB1AAEB3_terseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_63A4AD2037932D0E34F1B09ECB1AAEB3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for doubtful accounts</link:label>
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_63A4AD2037932D0E34F1B09ECB1AAEB3_label_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_63A4AD2037932D0E34F1B09ECB1AAEB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for Doubtful Accounts</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_63A4AD2037932D0E34F1B09ECB1AAEB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProvisionForDoubtfulAccounts_63A4AD2037932D0E34F1B09ECB1AAEB3" xlink:to="lab_us-gaap_ProvisionForDoubtfulAccounts_63A4AD2037932D0E34F1B09ECB1AAEB3" xlink:type="arc" />
    <link:label id="lab_us-gaap_LitigationSettlementExpense_EF05BFACDAB7A618107DB09ECB1A043D_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationSettlementExpense_EF05BFACDAB7A618107DB09ECB1A043D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation related charges</link:label>
    <link:label id="lab_us-gaap_LitigationSettlementExpense_EF05BFACDAB7A618107DB09ECB1A043D_label_en-US" xlink:label="lab_us-gaap_LitigationSettlementExpense_EF05BFACDAB7A618107DB09ECB1A043D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Settlement, Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LitigationSettlementExpense" xlink:label="loc_us-gaap_LitigationSettlementExpense_EF05BFACDAB7A618107DB09ECB1A043D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationSettlementExpense_EF05BFACDAB7A618107DB09ECB1A043D" xlink:to="lab_us-gaap_LitigationSettlementExpense_EF05BFACDAB7A618107DB09ECB1A043D" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestructuringCharges_0E8BD4C75B8D5398448DB09ECB1A5B8E_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCharges_0E8BD4C75B8D5398448DB09ECB1A5B8E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for non-cash restructuring charges</link:label>
    <link:label id="lab_us-gaap_RestructuringCharges_0E8BD4C75B8D5398448DB09ECB1A5B8E_label_en-US" xlink:label="lab_us-gaap_RestructuringCharges_0E8BD4C75B8D5398448DB09ECB1A5B8E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Charges</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestructuringCharges" xlink:label="loc_us-gaap_RestructuringCharges_0E8BD4C75B8D5398448DB09ECB1A5B8E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringCharges_0E8BD4C75B8D5398448DB09ECB1A5B8E" xlink:to="lab_us-gaap_RestructuringCharges_0E8BD4C75B8D5398448DB09ECB1A5B8E" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_42DEFEB811E40A0D90A2B09ECB1A4E0C_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_42DEFEB811E40A0D90A2B09ECB1A4E0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in assets and liabilities, net of acquisitions:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_42DEFEB811E40A0D90A2B09ECB1A4E0C_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_42DEFEB811E40A0D90A2B09ECB1A4E0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_42DEFEB811E40A0D90A2B09ECB1A4E0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_42DEFEB811E40A0D90A2B09ECB1A4E0C" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_42DEFEB811E40A0D90A2B09ECB1A4E0C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_D386691652DD0F62C50BB09ECB1A42F7_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_D386691652DD0F62C50BB09ECB1A42F7" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_D386691652DD0F62C50BB09ECB1A42F7_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_D386691652DD0F62C50BB09ECB1A42F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_D386691652DD0F62C50BB09ECB1A42F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_D386691652DD0F62C50BB09ECB1A42F7" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_D386691652DD0F62C50BB09ECB1A42F7" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInInventories_FC0D0A85958C65F0B642B09ECB1A783F_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_FC0D0A85958C65F0B642B09ECB1A783F" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Inventoried costs</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInInventories_FC0D0A85958C65F0B642B09ECB1A783F_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_FC0D0A85958C65F0B642B09ECB1A783F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Inventories</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_FC0D0A85958C65F0B642B09ECB1A783F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInventories_FC0D0A85958C65F0B642B09ECB1A783F" xlink:to="lab_us-gaap_IncreaseDecreaseInInventories_FC0D0A85958C65F0B642B09ECB1A783F" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_3A646B533512F2303D8CB09ECB1A9C8E_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_3A646B533512F2303D8CB09ECB1A9C8E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses and other assets</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_3A646B533512F2303D8CB09ECB1A9C8E_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_3A646B533512F2303D8CB09ECB1A9C8E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Prepaid Expense and Other Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_3A646B533512F2303D8CB09ECB1A9C8E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_3A646B533512F2303D8CB09ECB1A9C8E" xlink:to="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_3A646B533512F2303D8CB09ECB1A9C8E" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_01246C0FD1BF330D59D5B09ECB1A3628_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_01246C0FD1BF330D59D5B09ECB1A3628" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_01246C0FD1BF330D59D5B09ECB1A3628_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_01246C0FD1BF330D59D5B09ECB1A3628" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_01246C0FD1BF330D59D5B09ECB1A3628" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayable_01246C0FD1BF330D59D5B09ECB1A3628" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayable_01246C0FD1BF330D59D5B09ECB1A3628" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_9A1468C356B82AABC6E0B09ECB1BD03F_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_9A1468C356B82AABC6E0B09ECB1BD03F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued compensation</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_9A1468C356B82AABC6E0B09ECB1BD03F_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_9A1468C356B82AABC6E0B09ECB1BD03F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Employee Related Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_9A1468C356B82AABC6E0B09ECB1BD03F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_9A1468C356B82AABC6E0B09ECB1BD03F" xlink:to="lab_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_9A1468C356B82AABC6E0B09ECB1BD03F" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_13EC3C6F9D99BA15B4C1B09ECB1BAA42_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_13EC3C6F9D99BA15B4C1B09ECB1BAA42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued expenses</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_13EC3C6F9D99BA15B4C1B09ECB1BAA42_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_13EC3C6F9D99BA15B4C1B09ECB1BAA42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Accrued Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_13EC3C6F9D99BA15B4C1B09ECB1BAA42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_13EC3C6F9D99BA15B4C1B09ECB1BAA42" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_13EC3C6F9D99BA15B4C1B09ECB1BAA42" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInCustomerAdvances_7A547E904B6881A70A64B09ECB1B8C83_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInCustomerAdvances_7A547E904B6881A70A64B09ECB1B8C83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Advance payments received on contracts</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInCustomerAdvances_7A547E904B6881A70A64B09ECB1B8C83_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInCustomerAdvances_7A547E904B6881A70A64B09ECB1B8C83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Customer Advances</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInCustomerAdvances" xlink:label="loc_us-gaap_IncreaseDecreaseInCustomerAdvances_7A547E904B6881A70A64B09ECB1B8C83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInCustomerAdvances_7A547E904B6881A70A64B09ECB1B8C83" xlink:to="lab_us-gaap_IncreaseDecreaseInCustomerAdvances_7A547E904B6881A70A64B09ECB1B8C83" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_CBE5B44596FB80B551C1B09ECB1BE6B2_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_CBE5B44596FB80B551C1B09ECB1BE6B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_CBE5B44596FB80B551C1B09ECB1BE6B2_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_CBE5B44596FB80B551C1B09ECB1BE6B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Interest Payable, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_CBE5B44596FB80B551C1B09ECB1BE6B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_CBE5B44596FB80B551C1B09ECB1BE6B2" xlink:to="lab_us-gaap_IncreaseDecreaseInInterestPayableNet_CBE5B44596FB80B551C1B09ECB1BE6B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_429876CC6B6294F5A96DB09ECB1BDA9F_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_429876CC6B6294F5A96DB09ECB1BDA9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Billings in excess of costs and earnings on uncompleted contracts</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_429876CC6B6294F5A96DB09ECB1BDA9F_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_429876CC6B6294F5A96DB09ECB1BDA9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Billing in Excess of Cost of Earnings</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings" xlink:label="loc_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_429876CC6B6294F5A96DB09ECB1BDA9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_429876CC6B6294F5A96DB09ECB1BDA9F" xlink:to="lab_us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings_429876CC6B6294F5A96DB09ECB1BDA9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_DAAA64FE61ED9976DC39B09ECB1B0551_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_DAAA64FE61ED9976DC39B09ECB1B0551" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income tax receivable and payable</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_DAAA64FE61ED9976DC39B09ECB1B0551_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_DAAA64FE61ED9976DC39B09ECB1B0551" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_DAAA64FE61ED9976DC39B09ECB1B0551" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_DAAA64FE61ED9976DC39B09ECB1B0551" xlink:to="lab_us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_DAAA64FE61ED9976DC39B09ECB1B0551" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1A028CE1F7C0A4917588B09ECB1B9971_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1A028CE1F7C0A4917588B09ECB1B9971" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1A028CE1F7C0A4917588B09ECB1B9971_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1A028CE1F7C0A4917588B09ECB1B9971" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1A028CE1F7C0A4917588B09ECB1B9971" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1A028CE1F7C0A4917588B09ECB1B9971" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1A028CE1F7C0A4917588B09ECB1B9971" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_E1B9D0E5ACC735205360B09ECB1B2A16_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_E1B9D0E5ACC735205360B09ECB1B2A16" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in operating activities from continuing operations</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_E1B9D0E5ACC735205360B09ECB1B2A16_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_E1B9D0E5ACC735205360B09ECB1B2A16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_E1B9D0E5ACC735205360B09ECB1B2A16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_E1B9D0E5ACC735205360B09ECB1B2A16" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_E1B9D0E5ACC735205360B09ECB1B2A16" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_9E0E14CACA96AFC17B6FB09ECB1BBA8C_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_9E0E14CACA96AFC17B6FB09ECB1BBA8C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_9E0E14CACA96AFC17B6FB09ECB1BBA8C_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_9E0E14CACA96AFC17B6FB09ECB1BBA8C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_9E0E14CACA96AFC17B6FB09ECB1BBA8C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_9E0E14CACA96AFC17B6FB09ECB1BBA8C" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_9E0E14CACA96AFC17B6FB09ECB1BBA8C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_5AB6A73D831210D16E06B09ECB1B4572_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_5AB6A73D831210D16E06B09ECB1B4572" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_5AB6A73D831210D16E06B09ECB1B4572_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_5AB6A73D831210D16E06B09ECB1B4572" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Productive Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsForProceedsFromProductiveAssets" xlink:label="loc_us-gaap_PaymentsForProceedsFromProductiveAssets_5AB6A73D831210D16E06B09ECB1B4572" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromProductiveAssets_5AB6A73D831210D16E06B09ECB1B4572" xlink:to="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_5AB6A73D831210D16E06B09ECB1B4572" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_105BF993A10D3EE1706DB09ECB1B82C4_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_105BF993A10D3EE1706DB09ECB1B82C4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in investing activities from continuing operations</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_105BF993A10D3EE1706DB09ECB1B82C4_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_105BF993A10D3EE1706DB09ECB1B82C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_105BF993A10D3EE1706DB09ECB1B82C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_105BF993A10D3EE1706DB09ECB1B82C4" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_105BF993A10D3EE1706DB09ECB1B82C4" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_9D4308DE1EBDCC2105A4B09ECB1BB00D_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_9D4308DE1EBDCC2105A4B09ECB1BB00D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_9D4308DE1EBDCC2105A4B09ECB1BB00D_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_9D4308DE1EBDCC2105A4B09ECB1BB00D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_9D4308DE1EBDCC2105A4B09ECB1BB00D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_9D4308DE1EBDCC2105A4B09ECB1BB00D" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_9D4308DE1EBDCC2105A4B09ECB1BB00D" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_A6635903258DA5422C30B09ECB1B58A2_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_A6635903258DA5422C30B09ECB1B58A2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Extinguishment of long-term debt</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_A6635903258DA5422C30B09ECB1B58A2_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_A6635903258DA5422C30B09ECB1B58A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_A6635903258DA5422C30B09ECB1B58A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermDebt_A6635903258DA5422C30B09ECB1B58A2" xlink:to="lab_us-gaap_RepaymentsOfLongTermDebt_A6635903258DA5422C30B09ECB1B58A2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_E2C336D561B8B92EEF92B09ECB1BB29D_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_E2C336D561B8B92EEF92B09ECB1BB29D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from the issuance of common stock</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_E2C336D561B8B92EEF92B09ECB1BB29D_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_E2C336D561B8B92EEF92B09ECB1BB29D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_E2C336D561B8B92EEF92B09ECB1BB29D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_E2C336D561B8B92EEF92B09ECB1BB29D" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_E2C336D561B8B92EEF92B09ECB1BB29D" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_DD4D209A9E2FB5EA9427B09ECB1BAAA1_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_DD4D209A9E2FB5EA9427B09ECB1BAAA1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Repayment of debt</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_DD4D209A9E2FB5EA9427B09ECB1BAAA1_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_DD4D209A9E2FB5EA9427B09ECB1BAAA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Lines of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RepaymentsOfLongTermLinesOfCredit" xlink:label="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_DD4D209A9E2FB5EA9427B09ECB1BAAA1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_DD4D209A9E2FB5EA9427B09ECB1BAAA1" xlink:to="lab_us-gaap_RepaymentsOfLongTermLinesOfCredit_DD4D209A9E2FB5EA9427B09ECB1BAAA1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromRepurchaseOfEquity_98D64F2D8F387723C073B09ECB1C8F97_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepurchaseOfEquity_98D64F2D8F387723C073B09ECB1C8F97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from exercise of restricted stock units, employee stock options, and employee stock purchase plan</link:label>
    <link:label id="lab_us-gaap_ProceedsFromRepurchaseOfEquity_98D64F2D8F387723C073B09ECB1C8F97_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepurchaseOfEquity_98D64F2D8F387723C073B09ECB1C8F97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from (Repurchase of) Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromRepurchaseOfEquity" xlink:label="loc_us-gaap_ProceedsFromRepurchaseOfEquity_98D64F2D8F387723C073B09ECB1C8F97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromRepurchaseOfEquity_98D64F2D8F387723C073B09ECB1C8F97" xlink:to="lab_us-gaap_ProceedsFromRepurchaseOfEquity_98D64F2D8F387723C073B09ECB1C8F97" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_26E9B4C5240A13448A0BB09ECB1C04BD_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_26E9B4C5240A13448A0BB09ECB1C04BD" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by financing activities from continuing operations</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_26E9B4C5240A13448A0BB09ECB1C04BD_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_26E9B4C5240A13448A0BB09ECB1C04BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_26E9B4C5240A13448A0BB09ECB1C04BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_26E9B4C5240A13448A0BB09ECB1C04BD" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_26E9B4C5240A13448A0BB09ECB1C04BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInContinuingOperations_5A2DCC26A58F04EFE5C4B09ECB1C28D1_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInContinuingOperations_5A2DCC26A58F04EFE5C4B09ECB1C28D1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash flows of continuing operations</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInContinuingOperations_5A2DCC26A58F04EFE5C4B09ECB1C28D1_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInContinuingOperations_5A2DCC26A58F04EFE5C4B09ECB1C28D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInContinuingOperations_5A2DCC26A58F04EFE5C4B09ECB1C28D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInContinuingOperations_5A2DCC26A58F04EFE5C4B09ECB1C28D1" xlink:to="lab_us-gaap_NetCashProvidedByUsedInContinuingOperations_5A2DCC26A58F04EFE5C4B09ECB1C28D1" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_12E9860B2E3F88637CB2B09ECB1C2004_terseLabel_en-US" xlink:label="lab_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_12E9860B2E3F88637CB2B09ECB1C2004" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net operating cash flows of discontinued operations</link:label>
    <link:label id="lab_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_12E9860B2E3F88637CB2B09ECB1C2004_label_en-US" xlink:label="lab_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_12E9860B2E3F88637CB2B09ECB1C2004" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Provided by (Used in) Operating Activities, Discontinued Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_12E9860B2E3F88637CB2B09ECB1C2004" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_12E9860B2E3F88637CB2B09ECB1C2004" xlink:to="lab_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_12E9860B2E3F88637CB2B09ECB1C2004" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_8E74A6ED5A32587B57F5B09ECB1CF9AE_terseLabel_en-US" xlink:label="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_8E74A6ED5A32587B57F5B09ECB1CF9AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net investing cash flows of discontinued operations</link:label>
    <link:label id="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_8E74A6ED5A32587B57F5B09ECB1CF9AE_label_en-US" xlink:label="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_8E74A6ED5A32587B57F5B09ECB1CF9AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Provided by (Used in) Investing Activities, Discontinued Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_8E74A6ED5A32587B57F5B09ECB1CF9AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_8E74A6ED5A32587B57F5B09ECB1CF9AE" xlink:to="lab_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_8E74A6ED5A32587B57F5B09ECB1CF9AE" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_586BD94B493559E5E161B09ECB1C48C5_totalLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_586BD94B493559E5E161B09ECB1C48C5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net increase (decrease) in cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_586BD94B493559E5E161B09ECB1C48C5_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_586BD94B493559E5E161B09ECB1C48C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_586BD94B493559E5E161B09ECB1C48C5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_586BD94B493559E5E161B09ECB1C48C5" xlink:to="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_586BD94B493559E5E161B09ECB1C48C5" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_69B3E7D671D9022F92ABB09ECB1C6842_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_69B3E7D671D9022F92ABB09ECB1C6842" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at beginning of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_69B3E7D671D9022F92ABB09ECB1C6842" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_69B3E7D671D9022F92ABB09ECB1C6842" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_69B3E7D671D9022F92ABB09ECB1C6842" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FB5C37EED40899F13AF7B09ECB1CBAF1_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FB5C37EED40899F13AF7B09ECB1CBAF1" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_FB5C37EED40899F13AF7B09ECB1CBAF1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_FB5C37EED40899F13AF7B09ECB1CBAF1" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FB5C37EED40899F13AF7B09ECB1CBAF1" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_AD98F3FD202A3594C9353136994578CF_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_38A0AB54B173541291B2AB18BA40D167" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Information</link:label>
    <link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_AD98F3FD202A3594C9353136994578CF_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_38A0AB54B173541291B2AB18BA40D167" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_38A0AB54B173541291B2AB18BA40D167" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingDisclosureTextBlock_38A0AB54B173541291B2AB18BA40D167" xlink:to="lab_us-gaap_SegmentReportingDisclosureTextBlock_38A0AB54B173541291B2AB18BA40D167" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_AC76604340D50013033BB09ECB3B4D14_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_AC76604340D50013033BB09ECB3B4D14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_AC76604340D50013033BB09ECB3B4D14" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_AC76604340D50013033BB09ECB3B4D14" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_AC76604340D50013033BB09ECB3B4D14" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_468EF14C3CD3D6C8625AB09ECB3B0F0F_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_468EF14C3CD3D6C8625AB09ECB3B0F0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash</link:label>
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_468EF14C3CD3D6C8625AB09ECB3B0F0F_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_468EF14C3CD3D6C8625AB09ECB3B0F0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash and Cash Equivalents, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_468EF14C3CD3D6C8625AB09ECB3B0F0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_468EF14C3CD3D6C8625AB09ECB3B0F0F" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_468EF14C3CD3D6C8625AB09ECB3B0F0F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PrepaidExpenseCurrent_0F5FAA6C3DB80F411BB8B09ECB3CA3D5_terseLabel_en-US" xlink:label="lab_us-gaap_PrepaidExpenseCurrent_0F5FAA6C3DB80F411BB8B09ECB3CA3D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses</link:label>
    <link:label id="lab_us-gaap_PrepaidExpenseCurrent_0F5FAA6C3DB80F411BB8B09ECB3CA3D5_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseCurrent_0F5FAA6C3DB80F411BB8B09ECB3CA3D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Expense, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_0F5FAA6C3DB80F411BB8B09ECB3CA3D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PrepaidExpenseCurrent_0F5FAA6C3DB80F411BB8B09ECB3CA3D5" xlink:to="lab_us-gaap_PrepaidExpenseCurrent_0F5FAA6C3DB80F411BB8B09ECB3CA3D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssetsCurrent_43D2839B49C2960D9A8BB09ECB3CAACD_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_43D2839B49C2960D9A8BB09ECB3CAACD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_us-gaap_OtherAssetsCurrent_43D2839B49C2960D9A8BB09ECB3CAACD_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_43D2839B49C2960D9A8BB09ECB3CAACD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_43D2839B49C2960D9A8BB09ECB3CAACD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsCurrent_43D2839B49C2960D9A8BB09ECB3CAACD" xlink:to="lab_us-gaap_OtherAssetsCurrent_43D2839B49C2960D9A8BB09ECB3CAACD" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_369656AC14A942BEFB13B09ECB3D1F57_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_369656AC14A942BEFB13B09ECB3D1F57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued expenses</link:label>
    <link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_369656AC14A942BEFB13B09ECB3D1F57_label_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_369656AC14A942BEFB13B09ECB3D1F57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_369656AC14A942BEFB13B09ECB3D1F57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_369656AC14A942BEFB13B09ECB3D1F57" xlink:to="lab_us-gaap_AccruedLiabilitiesCurrent_369656AC14A942BEFB13B09ECB3D1F57" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestPayableCurrent_55944BD7840F2E0C7ABBB09ECB3D47DB_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_55944BD7840F2E0C7ABBB09ECB3D47DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_us-gaap_InterestPayableCurrent_55944BD7840F2E0C7ABBB09ECB3D47DB_label_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_55944BD7840F2E0C7ABBB09ECB3D47DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_55944BD7840F2E0C7ABBB09ECB3D47DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPayableCurrent_55944BD7840F2E0C7ABBB09ECB3D47DB" xlink:to="lab_us-gaap_InterestPayableCurrent_55944BD7840F2E0C7ABBB09ECB3D47DB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtNoncurrent_169911E59159A7F56DCFB09ECB3E0A54_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_169911E59159A7F56DCFB09ECB3E0A54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt principal, net of current portion</link:label>
    <link:label id="lab_us-gaap_LongTermDebtNoncurrent_169911E59159A7F56DCFB09ECB3E0A54_label_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_169911E59159A7F56DCFB09ECB3E0A54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Excluding Current Maturities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_169911E59159A7F56DCFB09ECB3E0A54" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_169911E59159A7F56DCFB09ECB3E0A54" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_169911E59159A7F56DCFB09ECB3E0A54" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_DE4D7ADE5268FC6782A5B09ECB3E8D16_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_DE4D7ADE5268FC6782A5B09ECB3E8D16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and contingencies</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_DE4D7ADE5268FC6782A5B09ECB3E8D16_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_DE4D7ADE5268FC6782A5B09ECB3E8D16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_DE4D7ADE5268FC6782A5B09ECB3E8D16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_DE4D7ADE5268FC6782A5B09ECB3E8D16" xlink:to="lab_us-gaap_CommitmentsAndContingencies_DE4D7ADE5268FC6782A5B09ECB3E8D16" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_0A700E3E2DD1D72FBAF0B09ECB3E6E27_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_0A700E3E2DD1D72FBAF0B09ECB3E6E27" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stockholders&#8217; equity:</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_0A700E3E2DD1D72FBAF0B09ECB3E6E27_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_0A700E3E2DD1D72FBAF0B09ECB3E6E27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_0A700E3E2DD1D72FBAF0B09ECB3E6E27" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityAbstract_0A700E3E2DD1D72FBAF0B09ECB3E6E27" xlink:to="lab_us-gaap_StockholdersEquityAbstract_0A700E3E2DD1D72FBAF0B09ECB3E6E27" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockValue_2AFAD627A0AB112519B2B09ECB3ED702_verboseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockValue_2AFAD627A0AB112519B2B09ECB3ED702" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares outstanding at March 26, 2017 and December 25, 2016</link:label>
    <link:label id="lab_us-gaap_PreferredStockValue_2AFAD627A0AB112519B2B09ECB3ED702_label_en-US" xlink:label="lab_us-gaap_PreferredStockValue_2AFAD627A0AB112519B2B09ECB3ED702" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Value, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_2AFAD627A0AB112519B2B09ECB3ED702" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockValue_2AFAD627A0AB112519B2B09ECB3ED702" xlink:to="lab_us-gaap_PreferredStockValue_2AFAD627A0AB112519B2B09ECB3ED702" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockValue_FAC3F14BD705AE113A27B09ECB3EC4DD_verboseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_FAC3F14BD705AE113A27B09ECB3EC4DD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Common stock, $0.001 par value, 195,000,000 shares authorized; 86,439,842 and 73,945,533 shares issued and outstanding at March 26, 2017 and December 25, 2016, respectively</link:label>
    <link:label id="lab_us-gaap_CommonStockValue_FAC3F14BD705AE113A27B09ECB3EC4DD_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_FAC3F14BD705AE113A27B09ECB3EC4DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Value, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_FAC3F14BD705AE113A27B09ECB3EC4DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue_FAC3F14BD705AE113A27B09ECB3EC4DD" xlink:to="lab_us-gaap_CommonStockValue_FAC3F14BD705AE113A27B09ECB3EC4DD" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_EE0EE38B4AA687159616B09ECB3F4747_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_EE0EE38B4AA687159616B09ECB3F4747" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional paid-in capital</link:label>
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_EE0EE38B4AA687159616B09ECB3F4747_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_EE0EE38B4AA687159616B09ECB3F4747" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid in Capital, Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_EE0EE38B4AA687159616B09ECB3F4747" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_EE0EE38B4AA687159616B09ECB3F4747" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_EE0EE38B4AA687159616B09ECB3F4747" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_07B3A0196CE05768B887B09ECB3F135F_verboseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_07B3A0196CE05768B887B09ECB3F135F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive loss</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_07B3A0196CE05768B887B09ECB3F135F_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_07B3A0196CE05768B887B09ECB3F135F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_07B3A0196CE05768B887B09ECB3F135F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_07B3A0196CE05768B887B09ECB3F135F" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_07B3A0196CE05768B887B09ECB3F135F" xlink:type="arc" />
    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_58D47552FBB3212EBDDFB09ECB3FAED1_verboseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_58D47552FBB3212EBDDFB09ECB3FAED1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accumulated deficit</link:label>
    <link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_58D47552FBB3212EBDDFB09ECB3FAED1_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_58D47552FBB3212EBDDFB09ECB3FAED1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained Earnings (Accumulated Deficit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_58D47552FBB3212EBDDFB09ECB3FAED1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficit_58D47552FBB3212EBDDFB09ECB3FAED1" xlink:to="lab_us-gaap_RetainedEarningsAccumulatedDeficit_58D47552FBB3212EBDDFB09ECB3FAED1" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_FB02CE3497A64B8C01DBB09ECB3F03C8_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_FB02CE3497A64B8C01DBB09ECB3F03C8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total stockholders&#8217; equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_FB02CE3497A64B8C01DBB09ECB3F03C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_FB02CE3497A64B8C01DBB09ECB3F03C8" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_FB02CE3497A64B8C01DBB09ECB3F03C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryDisclosureAbstract_F3D5E9BE9CE5E25EC31B313699922EAF_label_en-US" xlink:label="lab_us-gaap_InventoryDisclosureAbstract_2D2E50BEAAB755FE9E34170977B9A45F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_2D2E50BEAAB755FE9E34170977B9A45F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_2D2E50BEAAB755FE9E34170977B9A45F" xlink:to="lab_us-gaap_InventoryDisclosureAbstract_2D2E50BEAAB755FE9E34170977B9A45F" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryRawMaterialsNetOfReserves_CBDA8C214E555143DA8831369992EC7E_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsNetOfReserves_1257F3EE5CB456F782D455FBCBF93A72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Raw materials</link:label>
    <link:label id="lab_us-gaap_InventoryRawMaterialsNetOfReserves_CBDA8C214E555143DA8831369992EC7E_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsNetOfReserves_1257F3EE5CB456F782D455FBCBF93A72" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Raw Materials, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryRawMaterialsNetOfReserves" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_1257F3EE5CB456F782D455FBCBF93A72" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryRawMaterialsNetOfReserves_1257F3EE5CB456F782D455FBCBF93A72" xlink:to="lab_us-gaap_InventoryRawMaterialsNetOfReserves_1257F3EE5CB456F782D455FBCBF93A72" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_D66B977E6CAE0A71E8D8313699923D96_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_69E5839497CC51DAB2B2A05BCD8D6D45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Work in process</link:label>
    <link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_D66B977E6CAE0A71E8D8313699923D96_label_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_69E5839497CC51DAB2B2A05BCD8D6D45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Work in Process, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryWorkInProcessNetOfReserves" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_69E5839497CC51DAB2B2A05BCD8D6D45" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryWorkInProcessNetOfReserves_69E5839497CC51DAB2B2A05BCD8D6D45" xlink:to="lab_us-gaap_InventoryWorkInProcessNetOfReserves_69E5839497CC51DAB2B2A05BCD8D6D45" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_ED1A6123D88AA80E3AAD313699923590_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_C31C004A96285B4EA033C7BA0B3243F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finished goods</link:label>
    <link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_ED1A6123D88AA80E3AAD313699923590_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_C31C004A96285B4EA033C7BA0B3243F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Finished Goods, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_C31C004A96285B4EA033C7BA0B3243F6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_C31C004A96285B4EA033C7BA0B3243F6" xlink:to="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_C31C004A96285B4EA033C7BA0B3243F6" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherInventoryNetOfReserves_FBF937FDCFA5B29D6AAF31369992400F_terseLabel_en-US" xlink:label="lab_us-gaap_OtherInventoryNetOfReserves_70CCAED5E3A95F8181C13CE968602DAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplies and other</link:label>
    <link:label id="lab_us-gaap_OtherInventoryNetOfReserves_FBF937FDCFA5B29D6AAF31369992400F_label_en-US" xlink:label="lab_us-gaap_OtherInventoryNetOfReserves_70CCAED5E3A95F8181C13CE968602DAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Inventory, Net of Reserves</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherInventoryNetOfReserves" xlink:label="loc_us-gaap_OtherInventoryNetOfReserves_70CCAED5E3A95F8181C13CE968602DAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherInventoryNetOfReserves_70CCAED5E3A95F8181C13CE968602DAD" xlink:to="lab_us-gaap_OtherInventoryNetOfReserves_70CCAED5E3A95F8181C13CE968602DAD" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNet_15217C48ECAFC2BFD21A31369992DCB7_totalLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_96F1CB9BB595543F98BE715798DFDD9B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Subtotal inventoried costs</link:label>
    <link:label id="lab_us-gaap_InventoryNet_15217C48ECAFC2BFD21A31369992DCB7_label_en-US" xlink:label="lab_us-gaap_InventoryNet_96F1CB9BB595543F98BE715798DFDD9B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_96F1CB9BB595543F98BE715798DFDD9B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_96F1CB9BB595543F98BE715798DFDD9B" xlink:to="lab_us-gaap_InventoryNet_96F1CB9BB595543F98BE715798DFDD9B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_8A1503845DD2A397C6B731369993D1F9_negatedLabel_en-US" xlink:label="lab_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_DA74B263F9A65FC294E80776ECC8F6D6" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: Customer advances and progress payments</link:label>
    <link:label id="lab_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_8A1503845DD2A397C6B731369993D1F9_label_en-US" xlink:label="lab_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_DA74B263F9A65FC294E80776ECC8F6D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Progress Payments Netted Against Inventory for Long-term Contracts or Programs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms" xlink:label="loc_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_DA74B263F9A65FC294E80776ECC8F6D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_DA74B263F9A65FC294E80776ECC8F6D6" xlink:to="lab_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_DA74B263F9A65FC294E80776ECC8F6D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_59606FB024B005452A7A313699937223_totalLabel_en-US" xlink:label="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_2A2DF0ECDD2E53DF922FA74B619A0A6F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total inventoried costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings" xlink:label="loc_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_2A2DF0ECDD2E53DF922FA74B619A0A6F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_2A2DF0ECDD2E53DF922FA74B619A0A6F" xlink:to="lab_us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings_2A2DF0ECDD2E53DF922FA74B619A0A6F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityTable_E505C98DFE2C91BA44B682E5D761FB9C_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityTable_E505C98DFE2C91BA44B682E5D761FB9C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Table]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityTable_E505C98DFE2C91BA44B682E5D761FB9C_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityTable_E505C98DFE2C91BA44B682E5D761FB9C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_E505C98DFE2C91BA44B682E5D761FB9C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_E505C98DFE2C91BA44B682E5D761FB9C" xlink:to="lab_us-gaap_LineOfCreditFacilityTable_E505C98DFE2C91BA44B682E5D761FB9C" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityAxis_570BFAFF7049DB58D74582E5D761A564_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_570BFAFF7049DB58D74582E5D761A564" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility [Axis]</link:label>
    <link:label id="lab_us-gaap_CreditFacilityAxis_570BFAFF7049DB58D74582E5D761A564_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_570BFAFF7049DB58D74582E5D761A564" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_570BFAFF7049DB58D74582E5D761A564" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityAxis_570BFAFF7049DB58D74582E5D761A564" xlink:to="lab_us-gaap_CreditFacilityAxis_570BFAFF7049DB58D74582E5D761A564" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityDomain_9C955D289AC0ECB1688082E5D761B989_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_9C955D289AC0ECB1688082E5D761B989" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
    <link:label id="lab_us-gaap_CreditFacilityDomain_9C955D289AC0ECB1688082E5D761B989_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_9C955D289AC0ECB1688082E5D761B989" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_9C955D289AC0ECB1688082E5D761B989" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityDomain_9C955D289AC0ECB1688082E5D761B989" xlink:to="lab_us-gaap_CreditFacilityDomain_9C955D289AC0ECB1688082E5D761B989" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_4EAD07973303DCD0B5CB82E5D761B164_verboseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_4EAD07973303DCD0B5CB82E5D761B164" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Revolving Loans</link:label>
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_4EAD07973303DCD0B5CB82E5D761B164_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_4EAD07973303DCD0B5CB82E5D761B164" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_4EAD07973303DCD0B5CB82E5D761B164" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_4EAD07973303DCD0B5CB82E5D761B164" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_4EAD07973303DCD0B5CB82E5D761B164" xlink:type="arc" />
    <link:label id="lab_us-gaap_LetterOfCreditMember_203833531E70D3DE727E82E5D7616E33_terseLabel_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_203833531E70D3DE727E82E5D7616E33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letter of Credit</link:label>
    <link:label id="lab_us-gaap_LetterOfCreditMember_203833531E70D3DE727E82E5D7616E33_label_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_203833531E70D3DE727E82E5D7616E33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letter of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="loc_us-gaap_LetterOfCreditMember_203833531E70D3DE727E82E5D7616E33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LetterOfCreditMember_203833531E70D3DE727E82E5D7616E33" xlink:to="lab_us-gaap_LetterOfCreditMember_203833531E70D3DE727E82E5D7616E33" xlink:type="arc" />
    <link:label id="lab_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704_terseLabel_en-US" xlink:label="lab_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Swingline Loan</link:label>
    <link:label id="lab_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704_label_en-US" xlink:label="lab_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Swing Line Loan [Member]</link:label>
    <link:label id="lab_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704_documentation_en-US" xlink:label="lab_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Swing Line Loan [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_SwingLineLoanMember" xlink:label="loc_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704" xlink:to="lab_ktos_SwingLineLoanMember_CF17903BD4A54560015382E5D761E704" xlink:type="arc" />
    <link:label id="lab_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE_terseLabel_en-US" xlink:label="lab_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Loans plus outstanding Swingline Loans plus Letters of Credit</link:label>
    <link:label id="lab_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE_label_en-US" xlink:label="lab_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Loan, Swingline Loan, and Line of Credit [Member]</link:label>
    <link:label id="lab_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE_documentation_en-US" xlink:label="lab_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving Loan, Swingline Loan, and Line of Credit [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_RevolvingLoanSwinglineLoanandLineofCreditMember" xlink:label="loc_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE" xlink:to="lab_ktos_RevolvingLoanSwinglineLoanandLineofCreditMember_58D3669737FE4AFEB9D982E5D761EBAE" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementScenarioAxis_E9AE5796B0A45E77FF6682E5D76196D5_terseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_E9AE5796B0A45E77FF6682E5D76196D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementScenarioAxis_E9AE5796B0A45E77FF6682E5D76196D5_label_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_E9AE5796B0A45E77FF6682E5D76196D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_E9AE5796B0A45E77FF6682E5D76196D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementScenarioAxis_E9AE5796B0A45E77FF6682E5D76196D5" xlink:to="lab_us-gaap_StatementScenarioAxis_E9AE5796B0A45E77FF6682E5D76196D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_BBA5526B06CEF9216C6682E5D761406A_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_BBA5526B06CEF9216C6682E5D761406A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_BBA5526B06CEF9216C6682E5D761406A_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_BBA5526B06CEF9216C6682E5D761406A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_BBA5526B06CEF9216C6682E5D761406A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_BBA5526B06CEF9216C6682E5D761406A" xlink:to="lab_us-gaap_ScenarioUnspecifiedDomain_BBA5526B06CEF9216C6682E5D761406A" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB_terseLabel_en-US" xlink:label="lab_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed charge coverage ratio not measured</link:label>
    <link:label id="lab_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB_label_en-US" xlink:label="lab_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario One [Member]</link:label>
    <link:label id="lab_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB_documentation_en-US" xlink:label="lab_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Scenario One [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ScenarioOneMember" xlink:label="loc_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB" xlink:to="lab_ktos_ScenarioOneMember_AC8B8DBEEA48B2A7545B82E5D76133CB" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228_terseLabel_en-US" xlink:label="lab_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed charge coverage ratio of at least 1.05</link:label>
    <link:label id="lab_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228_label_en-US" xlink:label="lab_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario Two [Member]</link:label>
    <link:label id="lab_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228_documentation_en-US" xlink:label="lab_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Scenario Two [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ScenarioTwoMember" xlink:label="loc_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228" xlink:to="lab_ktos_ScenarioTwoMember_55DFE12FE605B53AEC7C82E5D761A228" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680_terseLabel_en-US" xlink:label="lab_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Herley disposition proceeds reinvestment reserve, as defined in the amendment</link:label>
    <link:label id="lab_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680_label_en-US" xlink:label="lab_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario Five [Member]</link:label>
    <link:label id="lab_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680_documentation_en-US" xlink:label="lab_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Scenario Five [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ScenarioFiveMember" xlink:label="loc_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680" xlink:to="lab_ktos_ScenarioFiveMember_D3EA5624C79CD27B8D9882E5D761B680" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5_terseLabel_en-US" xlink:label="lab_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed charge coverage ratio of at least 1.10</link:label>
    <link:label id="lab_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5_label_en-US" xlink:label="lab_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario Three [Member]</link:label>
    <link:label id="lab_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5_documentation_en-US" xlink:label="lab_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Scenario Three [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ScenarioThreeMember" xlink:label="loc_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5" xlink:to="lab_ktos_ScenarioThreeMember_324D3A39C8E80F1F02F982E5D76110B5" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8_terseLabel_en-US" xlink:label="lab_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed charge coverage ratio remains at 1.15</link:label>
    <link:label id="lab_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8_label_en-US" xlink:label="lab_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario Four [Member]</link:label>
    <link:label id="lab_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8_documentation_en-US" xlink:label="lab_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Scenario Four [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ScenarioFourMember" xlink:label="loc_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8" xlink:to="lab_ktos_ScenarioFourMember_4996CCA315882953D2DA82E5D76275D8" xlink:type="arc" />
    <link:label id="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546_terseLabel_en-US" xlink:label="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014 Credit Agreement, Third Amendment</link:label>
    <link:label id="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546_label_en-US" xlink:label="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Fourteen Credit Agreement, Third Amendment [Member]</link:label>
    <link:label id="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546_documentation_en-US" xlink:label="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Fourteen Credit Agreement, Third Amendment [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember" xlink:label="loc_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546" xlink:to="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_9834A3748BAA8174A16682E5D762B546" xlink:type="arc" />
    <link:label id="lab_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B_terseLabel_en-US" xlink:label="lab_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014 Credit Agreement, Fourth Amendment</link:label>
    <link:label id="lab_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B_label_en-US" xlink:label="lab_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Fourteen Credit Agreement, Fourth Amendment [Member]</link:label>
    <link:label id="lab_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B_documentation_en-US" xlink:label="lab_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Fourteen Credit Agreement, Fourth Amendment [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember" xlink:label="loc_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B" xlink:to="lab_ktos_TwoThousandFourteenCreditAgreementFourthAmendmentMember_47F399ACDF76E5CB163382E5D7620A3B" xlink:type="arc" />
    <link:label id="lab_us-gaap_FederalFundsEffectiveSwapRateMember_A804137957B151C18C7282E5D762F701_terseLabel_en-US" xlink:label="lab_us-gaap_FederalFundsEffectiveSwapRateMember_A804137957B151C18C7282E5D762F701" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal Funds rate</link:label>
    <link:label id="lab_us-gaap_FederalFundsEffectiveSwapRateMember_A804137957B151C18C7282E5D762F701_label_en-US" xlink:label="lab_us-gaap_FederalFundsEffectiveSwapRateMember_A804137957B151C18C7282E5D762F701" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Federal Funds Effective Swap Rate [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FederalFundsEffectiveSwapRateMember" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_A804137957B151C18C7282E5D762F701" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FederalFundsEffectiveSwapRateMember_A804137957B151C18C7282E5D762F701" xlink:to="lab_us-gaap_FederalFundsEffectiveSwapRateMember_A804137957B151C18C7282E5D762F701" xlink:type="arc" />
    <link:label id="lab_us-gaap_BaseRateMember_7A8F9A40BB4F9494907382E5D762BB89_terseLabel_en-US" xlink:label="lab_us-gaap_BaseRateMember_7A8F9A40BB4F9494907382E5D762BB89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base rate</link:label>
    <link:label id="lab_us-gaap_BaseRateMember_7A8F9A40BB4F9494907382E5D762BB89_label_en-US" xlink:label="lab_us-gaap_BaseRateMember_7A8F9A40BB4F9494907382E5D762BB89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Base Rate [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_BaseRateMember" xlink:label="loc_us-gaap_BaseRateMember_7A8F9A40BB4F9494907382E5D762BB89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BaseRateMember_7A8F9A40BB4F9494907382E5D762BB89" xlink:to="lab_us-gaap_BaseRateMember_7A8F9A40BB4F9494907382E5D762BB89" xlink:type="arc" />
    <link:label id="lab_us-gaap_EurodollarMember_5CD759CB2C726D7B558D82E5D7627390_terseLabel_en-US" xlink:label="lab_us-gaap_EurodollarMember_5CD759CB2C726D7B558D82E5D7627390" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Eurodollar rate</link:label>
    <link:label id="lab_us-gaap_EurodollarMember_5CD759CB2C726D7B558D82E5D7627390_label_en-US" xlink:label="lab_us-gaap_EurodollarMember_5CD759CB2C726D7B558D82E5D7627390" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Eurodollar [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EurodollarMember" xlink:label="loc_us-gaap_EurodollarMember_5CD759CB2C726D7B558D82E5D7627390" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EurodollarMember_5CD759CB2C726D7B558D82E5D7627390" xlink:to="lab_us-gaap_EurodollarMember_5CD759CB2C726D7B558D82E5D7627390" xlink:type="arc" />
    <link:label id="lab_us-gaap_RangeAxis_A7FCF2FC6EF1625D08F982E5D7625645_terseLabel_en-US" xlink:label="lab_us-gaap_RangeAxis_A7FCF2FC6EF1625D08F982E5D7625645" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:label id="lab_us-gaap_RangeAxis_A7FCF2FC6EF1625D08F982E5D7625645_label_en-US" xlink:label="lab_us-gaap_RangeAxis_A7FCF2FC6EF1625D08F982E5D7625645" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_A7FCF2FC6EF1625D08F982E5D7625645" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeAxis_A7FCF2FC6EF1625D08F982E5D7625645" xlink:to="lab_us-gaap_RangeAxis_A7FCF2FC6EF1625D08F982E5D7625645" xlink:type="arc" />
    <link:label id="lab_us-gaap_RangeMember_CA3366551D5A99A42A0382E5D76275C7_terseLabel_en-US" xlink:label="lab_us-gaap_RangeMember_CA3366551D5A99A42A0382E5D76275C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:label id="lab_us-gaap_RangeMember_CA3366551D5A99A42A0382E5D76275C7_label_en-US" xlink:label="lab_us-gaap_RangeMember_CA3366551D5A99A42A0382E5D76275C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_CA3366551D5A99A42A0382E5D76275C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeMember_CA3366551D5A99A42A0382E5D76275C7" xlink:to="lab_us-gaap_RangeMember_CA3366551D5A99A42A0382E5D76275C7" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinimumMember_95E0F5DA406FA62AD40A82E5D762AEF1_terseLabel_en-US" xlink:label="lab_us-gaap_MinimumMember_95E0F5DA406FA62AD40A82E5D762AEF1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum</link:label>
    <link:label id="lab_us-gaap_MinimumMember_95E0F5DA406FA62AD40A82E5D762AEF1_label_en-US" xlink:label="lab_us-gaap_MinimumMember_95E0F5DA406FA62AD40A82E5D762AEF1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_95E0F5DA406FA62AD40A82E5D762AEF1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinimumMember_95E0F5DA406FA62AD40A82E5D762AEF1" xlink:to="lab_us-gaap_MinimumMember_95E0F5DA406FA62AD40A82E5D762AEF1" xlink:type="arc" />
    <link:label id="lab_us-gaap_MaximumMember_619CF09300EDB1DE831A82E5D762EB3A_terseLabel_en-US" xlink:label="lab_us-gaap_MaximumMember_619CF09300EDB1DE831A82E5D762EB3A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum</link:label>
    <link:label id="lab_us-gaap_MaximumMember_619CF09300EDB1DE831A82E5D762EB3A_label_en-US" xlink:label="lab_us-gaap_MaximumMember_619CF09300EDB1DE831A82E5D762EB3A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_619CF09300EDB1DE831A82E5D762EB3A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaximumMember_619CF09300EDB1DE831A82E5D762EB3A" xlink:to="lab_us-gaap_MaximumMember_619CF09300EDB1DE831A82E5D762EB3A" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_76B2305BF6DBD5C8A9F382E5D7629F08_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_76B2305BF6DBD5C8A9F382E5D7629F08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal Group Name [Axis]</link:label>
    <link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_76B2305BF6DBD5C8A9F382E5D7629F08_label_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_76B2305BF6DBD5C8A9F382E5D7629F08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_76B2305BF6DBD5C8A9F382E5D7629F08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_76B2305BF6DBD5C8A9F382E5D7629F08" xlink:to="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_76B2305BF6DBD5C8A9F382E5D7629F08" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_FE67134344EE595AF4BE82E5D762E2A3_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_FE67134344EE595AF4BE82E5D762E2A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal Groups, Including Discontinued Operations, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_FE67134344EE595AF4BE82E5D762E2A3_label_en-US" xlink:label="lab_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_FE67134344EE595AF4BE82E5D762E2A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_FE67134344EE595AF4BE82E5D762E2A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_FE67134344EE595AF4BE82E5D762E2A3" xlink:to="lab_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_FE67134344EE595AF4BE82E5D762E2A3" xlink:type="arc" />
    <link:label id="lab_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3_terseLabel_en-US" xlink:label="lab_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Herley</link:label>
    <link:label id="lab_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3_label_en-US" xlink:label="lab_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Herley Industries Inc [Member]</link:label>
    <link:label id="lab_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3_documentation_en-US" xlink:label="lab_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Herley Industries Inc [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_HerleyIndustriesIncMember" xlink:label="loc_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3" xlink:to="lab_ktos_HerleyIndustriesIncMember_90F094BEB4D796E2710682E5D7635CB3" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_6CD99120ADE65DCFA44A82E5D7637411_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_6CD99120ADE65DCFA44A82E5D7637411" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Line Items]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_6CD99120ADE65DCFA44A82E5D7637411_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_6CD99120ADE65DCFA44A82E5D7637411" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_6CD99120ADE65DCFA44A82E5D7637411" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_6CD99120ADE65DCFA44A82E5D7637411" xlink:to="lab_us-gaap_LineOfCreditFacilityLineItems_6CD99120ADE65DCFA44A82E5D7637411" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3445EC104CE67C3B905882E5D7639869_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3445EC104CE67C3B905882E5D7639869" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum borrowing capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3445EC104CE67C3B905882E5D7639869_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3445EC104CE67C3B905882E5D7639869" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3445EC104CE67C3B905882E5D7639869" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3445EC104CE67C3B905882E5D7639869" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3445EC104CE67C3B905882E5D7639869" xlink:type="arc" />
    <link:label id="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116_terseLabel_en-US" xlink:label="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Potential maximum borrowing capacity, subject to Lender approval</link:label>
    <link:label id="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116_label_en-US" xlink:label="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line Of Credit Facility, Maximum Possible Borrowings Subject To Application And Bank Approval</link:label>
    <link:label id="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116_documentation_en-US" xlink:label="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line Of Credit Facility, Maximum Possible Borrowings Subject To Application And Bank Approval</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval" xlink:label="loc_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116" xlink:to="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_45A45B411B098FEA35E582E5D7630116" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66_terseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed charge coverage ratio</link:label>
    <link:label id="lab_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66_label_en-US" xlink:label="lab_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Fixed Charge Coverage Ratio</link:label>
    <link:label id="lab_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line Of Credit Facility Fixed Coverage Ratio</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentFixedChargeCoverageRatio" xlink:label="loc_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66" xlink:to="lab_ktos_DebtInstrumentFixedChargeCoverageRatio_A4544677A099C459AF3B82E5D763FB66" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E6E4EBB186A55B53F8282E5D7631A74_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E6E4EBB186A55B53F8282E5D7631A74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base rate (the greater of prime rate or 0.5% over federal funds rate)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E6E4EBB186A55B53F8282E5D7631A74_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E6E4EBB186A55B53F8282E5D7631A74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E6E4EBB186A55B53F8282E5D7631A74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E6E4EBB186A55B53F8282E5D7631A74" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E6E4EBB186A55B53F8282E5D7631A74" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_22AE9079055D0262E20E82E5D7631C67_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_22AE9079055D0262E20E82E5D7631C67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base rate (floor, 1.0% over one-month LIBOR)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_22AE9079055D0262E20E82E5D7631C67_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_22AE9079055D0262E20E82E5D7631C67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_22AE9079055D0262E20E82E5D7631C67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_22AE9079055D0262E20E82E5D7631C67" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_22AE9079055D0262E20E82E5D7631C67" xlink:type="arc" />
    <link:label id="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0_terseLabel_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum amount required for repurchase</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0_label_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Compliance, Required Amount of Loan Repurchased</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0_documentation_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Compliance, Required Amount of Loan Repurchased</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased" xlink:label="loc_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0" xlink:to="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_AC8B39AC38077D4E5F7E82E5D76321F0" xlink:type="arc" />
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B_terseLabel_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Covenant Terms, capacity of outstanding loans or credit</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B_label_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Capacity of Outstanding Borrowing</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B_documentation_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Capacity of Outstanding Borrowing</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing" xlink:label="loc_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B" xlink:to="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_AB4EF52C4492282722DC82E5D763201B" xlink:type="arc" />
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859_terseLabel_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Covenant Terms, percentage of reinvestment in excess of loans and credit</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859_label_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Percentage of Reinvestment Reserve over Outstanding Borrowings in Excess of Capacity of Outstanding Borrowing</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859_documentation_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Percentage of Reinvestment Reserve over Outstanding Borrowings in Excess of Capacity of Outstanding Borrowing</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing" xlink:label="loc_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859" xlink:to="lab_ktos_LineofCreditFacilityCovenantTermsPercentageofReinvestmentReserveoverOutstandingBorrowingsinExcessofCapacityofOutstandingBorrowing_F6D95F034B710BD7862B82E5D7634859" xlink:type="arc" />
    <link:label id="lab_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A_terseLabel_en-US" xlink:label="lab_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reserve amount based on collateral carrying value</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A_label_en-US" xlink:label="lab_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Collateral, Reserve Amount</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A_documentation_en-US" xlink:label="lab_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Collateral, Reserve Amount</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_LineofCreditFacilityCollateralReserveAmount" xlink:label="loc_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A" xlink:to="lab_ktos_LineofCreditFacilityCollateralReserveAmount_B8E7CC36D6EC3263545F82E5D763A87A" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18_terseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period from sale allowed to reinvest in similar collateral assets</link:label>
    <link:label id="lab_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18_label_en-US" xlink:label="lab_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Duration for Collateral Adjustment</link:label>
    <link:label id="lab_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Duration for Collateral Adjustment</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentDurationforCollateralAdjustment" xlink:label="loc_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18" xlink:to="lab_ktos_DebtInstrumentDurationforCollateralAdjustment_42237F79713BB0C4062382E5D7631D18" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2_negatedTerseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Disposition decrease to collateral assets</link:label>
    <link:label id="lab_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2_label_en-US" xlink:label="lab_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Collateral Amount Increase (Decrease)</link:label>
    <link:label id="lab_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Collateral Amount Increase (Decrease)</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentCollateralAmountIncreaseDecrease" xlink:label="loc_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2" xlink:to="lab_ktos_DebtInstrumentCollateralAmountIncreaseDecrease_D0CE1B98AEEC996E88A882E5D7638CB2" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0_terseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letter of credit exposure outstanding</link:label>
    <link:label id="lab_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0_label_en-US" xlink:label="lab_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant Compliance, Credit Line Outstanding Excluded From Calculation of Minimum Fixed Charge Coverage Ratio, Amount</link:label>
    <link:label id="lab_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Covenant Compliance, Credit Line Outstanding Excluded From Calculation of Minimum Fixed Charge Coverage Ratio, Amount</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount" xlink:label="loc_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0" xlink:to="lab_ktos_DebtInstrumentCovenantComplianceCreditLineOutstandingExcludedFromCalculationofMinimumFixedChargeCoverageRatioAmount_F8AEB52ACADB84950EE782E5D7639FC0" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCredit_E8A834F3D2EEEC0C25F282E5D7639431_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_E8A834F3D2EEEC0C25F282E5D7639431" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding borrowings</link:label>
    <link:label id="lab_us-gaap_LineOfCredit_E8A834F3D2EEEC0C25F282E5D7639431_label_en-US" xlink:label="lab_us-gaap_LineOfCredit_E8A834F3D2EEEC0C25F282E5D7639431" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Line of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_E8A834F3D2EEEC0C25F282E5D7639431" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCredit_E8A834F3D2EEEC0C25F282E5D7639431" xlink:to="lab_us-gaap_LineOfCredit_E8A834F3D2EEEC0C25F282E5D7639431" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_4B49612C1077BA80BC3282E5D763B3A6_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_4B49612C1077BA80BC3282E5D763B3A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining borrowing capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_4B49612C1077BA80BC3282E5D763B3A6_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_4B49612C1077BA80BC3282E5D763B3A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Remaining Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_4B49612C1077BA80BC3282E5D763B3A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_4B49612C1077BA80BC3282E5D763B3A6" xlink:to="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_4B49612C1077BA80BC3282E5D763B3A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementAbstract_638BCB7B8667114C70D4B06CC3D87954_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_638BCB7B8667114C70D4B06CC3D87954" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_638BCB7B8667114C70D4B06CC3D87954" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract_638BCB7B8667114C70D4B06CC3D87954" xlink:to="lab_us-gaap_IncomeStatementAbstract_638BCB7B8667114C70D4B06CC3D87954" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueServicesNet_4E6E69FA4385EDC9E7A8B06CC3DC2D18_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueServicesNet_4E6E69FA4385EDC9E7A8B06CC3DC2D18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Service revenues</link:label>
    <link:label id="lab_us-gaap_SalesRevenueServicesNet_4E6E69FA4385EDC9E7A8B06CC3DC2D18_label_en-US" xlink:label="lab_us-gaap_SalesRevenueServicesNet_4E6E69FA4385EDC9E7A8B06CC3DC2D18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Revenue, Services, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_4E6E69FA4385EDC9E7A8B06CC3DC2D18" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueServicesNet_4E6E69FA4385EDC9E7A8B06CC3DC2D18" xlink:to="lab_us-gaap_SalesRevenueServicesNet_4E6E69FA4385EDC9E7A8B06CC3DC2D18" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueGoodsNet_6BFFF90FC4472B5CCDE3B06CC3DCD6E7_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueGoodsNet_6BFFF90FC4472B5CCDE3B06CC3DCD6E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product sales</link:label>
    <link:label id="lab_us-gaap_SalesRevenueGoodsNet_6BFFF90FC4472B5CCDE3B06CC3DCD6E7_label_en-US" xlink:label="lab_us-gaap_SalesRevenueGoodsNet_6BFFF90FC4472B5CCDE3B06CC3DCD6E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Revenue, Goods, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="loc_us-gaap_SalesRevenueGoodsNet_6BFFF90FC4472B5CCDE3B06CC3DCD6E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueGoodsNet_6BFFF90FC4472B5CCDE3B06CC3DCD6E7" xlink:to="lab_us-gaap_SalesRevenueGoodsNet_6BFFF90FC4472B5CCDE3B06CC3DCD6E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueNet_2AEA4071DFA938A9D0E4B06CC3DCC006_totalLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_2AEA4071DFA938A9D0E4B06CC3DCC006" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total revenues</link:label>
    <link:label id="lab_us-gaap_SalesRevenueNet_2AEA4071DFA938A9D0E4B06CC3DCC006_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_2AEA4071DFA938A9D0E4B06CC3DCC006" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_2AEA4071DFA938A9D0E4B06CC3DCC006" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNet_2AEA4071DFA938A9D0E4B06CC3DCC006" xlink:to="lab_us-gaap_SalesRevenueNet_2AEA4071DFA938A9D0E4B06CC3DCC006" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfServices_C35D81131F6491961928B06CC3DC2A6F_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfServices_C35D81131F6491961928B06CC3DC2A6F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of service revenues</link:label>
    <link:label id="lab_us-gaap_CostOfServices_C35D81131F6491961928B06CC3DC2A6F_label_en-US" xlink:label="lab_us-gaap_CostOfServices_C35D81131F6491961928B06CC3DC2A6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Services</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CostOfServices" xlink:label="loc_us-gaap_CostOfServices_C35D81131F6491961928B06CC3DC2A6F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfServices_C35D81131F6491961928B06CC3DC2A6F" xlink:to="lab_us-gaap_CostOfServices_C35D81131F6491961928B06CC3DC2A6F" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfGoodsSold_BBD19E19B55177E5A90DB06CC3DC0589_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsSold_BBD19E19B55177E5A90DB06CC3DC0589" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of product sales</link:label>
    <link:label id="lab_us-gaap_CostOfGoodsSold_BBD19E19B55177E5A90DB06CC3DC0589_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsSold_BBD19E19B55177E5A90DB06CC3DC0589" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Goods Sold</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="loc_us-gaap_CostOfGoodsSold_BBD19E19B55177E5A90DB06CC3DC0589" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsSold_BBD19E19B55177E5A90DB06CC3DC0589" xlink:to="lab_us-gaap_CostOfGoodsSold_BBD19E19B55177E5A90DB06CC3DC0589" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfRevenue_91C01FEBD5C9A96B901FB06CC3DC0C84_totalLabel_en-US" xlink:label="lab_us-gaap_CostOfRevenue_91C01FEBD5C9A96B901FB06CC3DC0C84" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total costs</link:label>
    <link:label id="lab_us-gaap_CostOfRevenue_91C01FEBD5C9A96B901FB06CC3DC0C84_label_en-US" xlink:label="lab_us-gaap_CostOfRevenue_91C01FEBD5C9A96B901FB06CC3DC0C84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CostOfRevenue" xlink:label="loc_us-gaap_CostOfRevenue_91C01FEBD5C9A96B901FB06CC3DC0C84" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfRevenue_91C01FEBD5C9A96B901FB06CC3DC0C84" xlink:to="lab_us-gaap_CostOfRevenue_91C01FEBD5C9A96B901FB06CC3DC0C84" xlink:type="arc" />
    <link:label id="lab_us-gaap_GrossProfit_291CFB3F0CBB0EBCE851B06CC3DCFB06_totalLabel_en-US" xlink:label="lab_us-gaap_GrossProfit_291CFB3F0CBB0EBCE851B06CC3DCFB06" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross profit</link:label>
    <link:label id="lab_us-gaap_GrossProfit_291CFB3F0CBB0EBCE851B06CC3DCFB06_label_en-US" xlink:label="lab_us-gaap_GrossProfit_291CFB3F0CBB0EBCE851B06CC3DCFB06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross Profit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_291CFB3F0CBB0EBCE851B06CC3DCFB06" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GrossProfit_291CFB3F0CBB0EBCE851B06CC3DCFB06" xlink:to="lab_us-gaap_GrossProfit_291CFB3F0CBB0EBCE851B06CC3DCFB06" xlink:type="arc" />
    <link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_05CAD6C94DB5A03858C7B06CC3DCEFB5_terseLabel_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_05CAD6C94DB5A03858C7B06CC3DCEFB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling, general and administrative expenses</link:label>
    <link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_05CAD6C94DB5A03858C7B06CC3DCEFB5_label_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_05CAD6C94DB5A03858C7B06CC3DCEFB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling, General and Administrative Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_05CAD6C94DB5A03858C7B06CC3DCEFB5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SellingGeneralAndAdministrativeExpense_05CAD6C94DB5A03858C7B06CC3DCEFB5" xlink:to="lab_us-gaap_SellingGeneralAndAdministrativeExpense_05CAD6C94DB5A03858C7B06CC3DCEFB5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_0FC69FE97332E3253F45B06CC3DC714F_terseLabel_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_0FC69FE97332E3253F45B06CC3DC714F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Research and development expenses</link:label>
    <link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_0FC69FE97332E3253F45B06CC3DC714F_label_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_0FC69FE97332E3253F45B06CC3DC714F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research and Development Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_0FC69FE97332E3253F45B06CC3DC714F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResearchAndDevelopmentExpense_0FC69FE97332E3253F45B06CC3DC714F" xlink:to="lab_us-gaap_ResearchAndDevelopmentExpense_0FC69FE97332E3253F45B06CC3DC714F" xlink:type="arc" />
    <link:label id="lab_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1_terseLabel_en-US" xlink:label="lab_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unused office space, restructuring expenses, and other</link:label>
    <link:label id="lab_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1_label_en-US" xlink:label="lab_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment Charges And Adjustments To Unused Office Space Liability</link:label>
    <link:label id="lab_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1_documentation_en-US" xlink:label="lab_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Impairment Charges And Adjustments To Unused Office Space Liability</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability" xlink:label="loc_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1" xlink:to="lab_ktos_ImpairmentChargesAndAdjustmentsToUnusedOfficeSpaceLiability_5FB7E51202BC81A42F19B06CC3DC96B1" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingIncomeLoss_9BB7FCCD10D40F415931B06CC3DC3CC7_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_9BB7FCCD10D40F415931B06CC3DC3CC7" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Operating income (loss) from continuing operations</link:label>
    <link:label id="lab_us-gaap_OperatingIncomeLoss_9BB7FCCD10D40F415931B06CC3DC3CC7_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_9BB7FCCD10D40F415931B06CC3DC3CC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Income (Loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_9BB7FCCD10D40F415931B06CC3DC3CC7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_9BB7FCCD10D40F415931B06CC3DC3CC7" xlink:to="lab_us-gaap_OperatingIncomeLoss_9BB7FCCD10D40F415931B06CC3DC3CC7" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpenseAbstract_AB1BE2B3C3B539B461A0B06CC3DCD1D2_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpenseAbstract_AB1BE2B3C3B539B461A0B06CC3DCD1D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income (expense):</link:label>
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpenseAbstract_AB1BE2B3C3B539B461A0B06CC3DCD1D2_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpenseAbstract_AB1BE2B3C3B539B461A0B06CC3DCD1D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Nonoperating Income (Expense) [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_AB1BE2B3C3B539B461A0B06CC3DCD1D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_AB1BE2B3C3B539B461A0B06CC3DCD1D2" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpenseAbstract_AB1BE2B3C3B539B461A0B06CC3DCD1D2" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_5B274577875F0DC8F156B06CC3DCEAA4_terseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_5B274577875F0DC8F156B06CC3DCEAA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest expense, net</link:label>
    <link:label id="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_5B274577875F0DC8F156B06CC3DCEAA4_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_5B274577875F0DC8F156B06CC3DCEAA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Income (Expense), Nonoperating, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_5B274577875F0DC8F156B06CC3DCEAA4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_5B274577875F0DC8F156B06CC3DCEAA4" xlink:to="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_5B274577875F0DC8F156B06CC3DCEAA4" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_F363C4EC89919A16F2C6B06CC3DCF777_terseLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_F363C4EC89919A16F2C6B06CC3DCF777" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss on extinguishment of debt</link:label>
    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_F363C4EC89919A16F2C6B06CC3DCF777_label_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_F363C4EC89919A16F2C6B06CC3DCF777" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (Losses) on Extinguishment of Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_F363C4EC89919A16F2C6B06CC3DCF777" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_F363C4EC89919A16F2C6B06CC3DCF777" xlink:to="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_F363C4EC89919A16F2C6B06CC3DCF777" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_095BA3C20A34CF7C85A1B06CC3DCE9D8_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_095BA3C20A34CF7C85A1B06CC3DCE9D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income, net</link:label>
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_095BA3C20A34CF7C85A1B06CC3DCE9D8_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_095BA3C20A34CF7C85A1B06CC3DCE9D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Nonoperating Income (Expense)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_095BA3C20A34CF7C85A1B06CC3DCE9D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_095BA3C20A34CF7C85A1B06CC3DCE9D8" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_095BA3C20A34CF7C85A1B06CC3DCE9D8" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_76763AC36469074FA3E5B06CC3DCB883_totalLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_76763AC36469074FA3E5B06CC3DCB883" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other expense, net</link:label>
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_76763AC36469074FA3E5B06CC3DCB883_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_76763AC36469074FA3E5B06CC3DCB883" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonoperating Income (Expense)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_76763AC36469074FA3E5B06CC3DCB883" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_76763AC36469074FA3E5B06CC3DCB883" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_76763AC36469074FA3E5B06CC3DCB883" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_F5940B4C7AF8641165ADB06CC3DC4D25_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_F5940B4C7AF8641165ADB06CC3DC4D25" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loss from continuing operations before income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_F5940B4C7AF8641165ADB06CC3DC4D25_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_F5940B4C7AF8641165ADB06CC3DC4D25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_F5940B4C7AF8641165ADB06CC3DC4D25" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_F5940B4C7AF8641165ADB06CC3DC4D25" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_F5940B4C7AF8641165ADB06CC3DC4D25" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_1E8826A58F980DAD0D03B06CC3DCCE67_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_1E8826A58F980DAD0D03B06CC3DCCE67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for income taxes from continuing operations</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_1E8826A58F980DAD0D03B06CC3DCCE67_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_1E8826A58F980DAD0D03B06CC3DCCE67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_1E8826A58F980DAD0D03B06CC3DCCE67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_1E8826A58F980DAD0D03B06CC3DCCE67" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_1E8826A58F980DAD0D03B06CC3DCCE67" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6B686DF53EDCF8D79AC3B06CC3DCAD0E_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6B686DF53EDCF8D79AC3B06CC3DCAD0E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loss from continuing operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6B686DF53EDCF8D79AC3B06CC3DCAD0E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6B686DF53EDCF8D79AC3B06CC3DCAD0E" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6B686DF53EDCF8D79AC3B06CC3DCAD0E" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract_4CC2422704DE44562A4BB06CC3DC5584_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract_4CC2422704DE44562A4BB06CC3DC5584" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discontinued operations</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract_4CC2422704DE44562A4BB06CC3DC5584_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract_4CC2422704DE44562A4BB06CC3DC5584" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract_4CC2422704DE44562A4BB06CC3DC5584" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract_4CC2422704DE44562A4BB06CC3DC5584" xlink:to="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract_4CC2422704DE44562A4BB06CC3DC5584" xlink:type="arc" />
    <link:label id="lab_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_4701F175131242722553B06CC3DCCDE8_terseLabel_en-US" xlink:label="lab_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_4701F175131242722553B06CC3DCCDE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss from operations of discontinued component</link:label>
    <link:label id="lab_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_4701F175131242722553B06CC3DCCDE8_label_en-US" xlink:label="lab_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_4701F175131242722553B06CC3DCCDE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_4701F175131242722553B06CC3DCCDE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_4701F175131242722553B06CC3DCCDE8" xlink:to="lab_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_4701F175131242722553B06CC3DCCDE8" xlink:type="arc" />
    <link:label id="lab_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_78F81DA8C994AA7F2F59B06CC3DC3934_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_78F81DA8C994AA7F2F59B06CC3DC3934" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Income tax expense</link:label>
    <link:label id="lab_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_78F81DA8C994AA7F2F59B06CC3DC3934_label_en-US" xlink:label="lab_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_78F81DA8C994AA7F2F59B06CC3DC3934" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discontinued Operation, Tax Effect of Discontinued Operation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_78F81DA8C994AA7F2F59B06CC3DC3934" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_78F81DA8C994AA7F2F59B06CC3DC3934" xlink:to="lab_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_78F81DA8C994AA7F2F59B06CC3DC3934" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_8F497DC27746369D3479B06CC3DD21CB_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_8F497DC27746369D3479B06CC3DD21CB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loss from discontinued operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_8F497DC27746369D3479B06CC3DD21CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_8F497DC27746369D3479B06CC3DD21CB" xlink:to="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_8F497DC27746369D3479B06CC3DD21CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_0C8660AB2CEDA81813E5B06CC3DD8750_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_0C8660AB2CEDA81813E5B06CC3DD8750" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic and diluted loss per common share:</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_0C8660AB2CEDA81813E5B06CC3DD8750_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_0C8660AB2CEDA81813E5B06CC3DD8750" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic and Diluted [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_0C8660AB2CEDA81813E5B06CC3DD8750" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_0C8660AB2CEDA81813E5B06CC3DD8750" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDilutedAbstract_0C8660AB2CEDA81813E5B06CC3DD8750" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare_3718443D62A6BAA58137B06CC3DD6A67_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare_3718443D62A6BAA58137B06CC3DD6A67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net loss from continuing operations (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare_3718443D62A6BAA58137B06CC3DD6A67_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare_3718443D62A6BAA58137B06CC3DD6A67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations, Per Basic and Diluted Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare_3718443D62A6BAA58137B06CC3DD6A67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare_3718443D62A6BAA58137B06CC3DD6A67" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsPerBasicAndDilutedShare_3718443D62A6BAA58137B06CC3DD6A67" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare_7BCB19B7854069DF0E9FB06CC3DDBA6C_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare_7BCB19B7854069DF0E9FB06CC3DDBA6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net loss from discontinued operations (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare_7BCB19B7854069DF0E9FB06CC3DDBA6C_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare_7BCB19B7854069DF0E9FB06CC3DDBA6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare_7BCB19B7854069DF0E9FB06CC3DDBA6C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare_7BCB19B7854069DF0E9FB06CC3DDBA6C" xlink:to="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare_7BCB19B7854069DF0E9FB06CC3DDBA6C" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_4DE0A759B15B9E754B12B06CC3DDDC61_totalLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_4DE0A759B15B9E754B12B06CC3DDDC61" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net loss per common share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_4DE0A759B15B9E754B12B06CC3DDDC61_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_4DE0A759B15B9E754B12B06CC3DDDC61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic and Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDiluted_4DE0A759B15B9E754B12B06CC3DDDC61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDiluted_4DE0A759B15B9E754B12B06CC3DDDC61" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDiluted_4DE0A759B15B9E754B12B06CC3DDDC61" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_210EDAD6A9CFAF12845BB06CC3DD1232_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_210EDAD6A9CFAF12845BB06CC3DD1232" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average common shares outstanding:</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_210EDAD6A9CFAF12845BB06CC3DD1232_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_210EDAD6A9CFAF12845BB06CC3DD1232" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_210EDAD6A9CFAF12845BB06CC3DD1232" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_210EDAD6A9CFAF12845BB06CC3DD1232" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_210EDAD6A9CFAF12845BB06CC3DD1232" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_A08034A93FDCEFE6DDB2B06E0BEE16DE_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_A08034A93FDCEFE6DDB2B06E0BEE16DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic and diluted weighted average shares outstanding (shares)</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_A08034A93FDCEFE6DDB2B06E0BEE16DE_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_A08034A93FDCEFE6DDB2B06E0BEE16DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Basic and Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_A08034A93FDCEFE6DDB2B06E0BEE16DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_A08034A93FDCEFE6DDB2B06E0BEE16DE" xlink:to="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_A08034A93FDCEFE6DDB2B06E0BEE16DE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_A232FDB5D2D11E9CD2B2B06CC3DD9E65_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_A232FDB5D2D11E9CD2B2B06CC3DD9E65" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Comprehensive Loss</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_A232FDB5D2D11E9CD2B2B06CC3DD9E65_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_A232FDB5D2D11E9CD2B2B06CC3DD9E65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_A232FDB5D2D11E9CD2B2B06CC3DD9E65" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_A232FDB5D2D11E9CD2B2B06CC3DD9E65" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_A232FDB5D2D11E9CD2B2B06CC3DD9E65" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_13AAFC468676DA8F01BBB06CC3DD04DC_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_13AAFC468676DA8F01BBB06CC3DD04DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in cumulative translation adjustment</link:label>
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_13AAFC468676DA8F01BBB06CC3DD04DC_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_13AAFC468676DA8F01BBB06CC3DD04DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_13AAFC468676DA8F01BBB06CC3DD04DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_13AAFC468676DA8F01BBB06CC3DD04DC" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_13AAFC468676DA8F01BBB06CC3DD04DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_BCD72CC4AA6C9DB040AAB06CC3DDBDB3_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_BCD72CC4AA6C9DB040AAB06CC3DDBDB3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Comprehensive loss</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_BCD72CC4AA6C9DB040AAB06CC3DDBDB3_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_BCD72CC4AA6C9DB040AAB06CC3DDBDB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_BCD72CC4AA6C9DB040AAB06CC3DDBDB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_BCD72CC4AA6C9DB040AAB06CC3DDBDB3" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_BCD72CC4AA6C9DB040AAB06CC3DDBDB3" xlink:type="arc" />
    <link:label id="lab_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E_terseLabel_en-US" xlink:label="lab_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling, general and administrative expenses</link:label>
    <link:label id="lab_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E_label_en-US" xlink:label="lab_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling General, And Administrative Expense, Business Acquisition Related Costs, And Other Impairment Charges</link:label>
    <link:label id="lab_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E_documentation_en-US" xlink:label="lab_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Selling General, And Administrative Expense And Business Acquisition Related Costs</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges" xlink:label="loc_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E" xlink:to="lab_ktos_SellingGeneralAndAdministrativeExpenseBusinessAcquisitionRelatedCostsAndOtherImpairmentCharges_27E91F840BF88E99E020B09ECA37BF7E" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_629B643BA4F729962726B09ECA38C61A_verboseLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_629B643BA4F729962726B09ECA38C61A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest income (expense), net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_629B643BA4F729962726B09ECA38C61A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_629B643BA4F729962726B09ECA38C61A" xlink:to="lab_us-gaap_InterestIncomeExpenseNonoperatingNet_629B643BA4F729962726B09ECA38C61A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_624B56D52BED7930059DB09ECA38CEFE_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_624B56D52BED7930059DB09ECA38CEFE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other income (expense), net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_624B56D52BED7930059DB09ECA38CEFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_624B56D52BED7930059DB09ECA38CEFE" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_624B56D52BED7930059DB09ECA38CEFE" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_7CFA24D46CE4D254B9B7B09ECA380F64_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_7CFA24D46CE4D254B9B7B09ECA380F64" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Provision (benefit) for income taxes from continuing operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_7CFA24D46CE4D254B9B7B09ECA380F64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7CFA24D46CE4D254B9B7B09ECA380F64" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_7CFA24D46CE4D254B9B7B09ECA380F64" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_D13E06670E3B5D463E1DB09ECA3856BE_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_D13E06670E3B5D463E1DB09ECA3856BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income (loss) from discontinued operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_D13E06670E3B5D463E1DB09ECA3856BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_D13E06670E3B5D463E1DB09ECA3856BE" xlink:to="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_D13E06670E3B5D463E1DB09ECA3856BE" xlink:type="arc" />
    <link:label id="lab_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74_terseLabel_en-US" xlink:label="lab_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity in net income (loss) of subsidiaries</link:label>
    <link:label id="lab_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74_label_en-US" xlink:label="lab_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity In Net Income (Loss) Of Subsidiaries</link:label>
    <link:label id="lab_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74_documentation_en-US" xlink:label="lab_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity In Net Income (Loss) Of Subsidiaries</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_EquityInNetIncomeLossOfSubsidiaries" xlink:label="loc_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74" xlink:to="lab_ktos_EquityInNetIncomeLossOfSubsidiaries_AF7FABBE8C49472BAAF5B09ECA38AB74" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_A9B4E7066CCD510D6119B09ECA38A3C0_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_A9B4E7066CCD510D6119B09ECA38A3C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Comprehensive income (loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_A9B4E7066CCD510D6119B09ECA38A3C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_A9B4E7066CCD510D6119B09ECA38A3C0" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_A9B4E7066CCD510D6119B09ECA38A3C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_0409487D7DFB09DD6DE877CDEC1B5A66_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_F0163667D5B959E28E1FB16EC04DB8D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Loss Per Common Share</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_0409487D7DFB09DD6DE877CDEC1B5A66_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_F0163667D5B959E28E1FB16EC04DB8D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_F0163667D5B959E28E1FB16EC04DB8D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareTextBlock_F0163667D5B959E28E1FB16EC04DB8D7" xlink:to="lab_us-gaap_EarningsPerShareTextBlock_F0163667D5B959E28E1FB16EC04DB8D7" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_825FC893305F1588877A313699D00A13_terseLabel_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_67885F3D719F522782AF4E31143159B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Significant Accounting Policies</link:label>
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_825FC893305F1588877A313699D00A13_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_67885F3D719F522782AF4E31143159B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_67885F3D719F522782AF4E31143159B1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_67885F3D719F522782AF4E31143159B1" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_67885F3D719F522782AF4E31143159B1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_31823DD89989A997E24F313699247C87_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_1E5A9513B5E15D9797F174B718A54EFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Consolidating Balance Sheet</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_31823DD89989A997E24F313699247C87_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_1E5A9513B5E15D9797F174B718A54EFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Balance Sheet [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_1E5A9513B5E15D9797F174B718A54EFF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_1E5A9513B5E15D9797F174B718A54EFF" xlink:to="lab_us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock_1E5A9513B5E15D9797F174B718A54EFF" xlink:type="arc" />
    <link:label id="lab_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_9D13F20F3CA88BDC6B6B31369924E233_terseLabel_en-US" xlink:label="lab_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_6BB7F9480A615D6CB7658D27DFEC10D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Consolidating Statement of Operations and Comprehensive Income (Loss)</link:label>
    <link:label id="lab_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_9D13F20F3CA88BDC6B6B31369924E233_label_en-US" xlink:label="lab_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_6BB7F9480A615D6CB7658D27DFEC10D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Condensed Statement Of Operations And Comprehensive Income [Table Text Block]</link:label>
    <link:label id="lab_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_9D13F20F3CA88BDC6B6B31369924E233_documentation_en-US" xlink:label="lab_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_6BB7F9480A615D6CB7658D27DFEC10D3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule Of Condensed Statement Of Operations And Comprehensive Income [Table Text Block]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock" xlink:label="loc_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_6BB7F9480A615D6CB7658D27DFEC10D3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_6BB7F9480A615D6CB7658D27DFEC10D3" xlink:to="lab_ktos_ScheduleOfCondensedStatementOfOperationsAndComprehensiveIncomeTableTextBlock_6BB7F9480A615D6CB7658D27DFEC10D3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_E8436789CE946CC75D9B313699240B79_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_F9CE060DDBD356C0A7EEBFBFAD08AEBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Condensed Consolidating Statement of Cash Flows</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_E8436789CE946CC75D9B313699240B79_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_F9CE060DDBD356C0A7EEBFBFAD08AEBA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Cash Flow Statement [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_F9CE060DDBD356C0A7EEBFBFAD08AEBA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_F9CE060DDBD356C0A7EEBFBFAD08AEBA" xlink:to="lab_us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock_F9CE060DDBD356C0A7EEBFBFAD08AEBA" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_2AA08765507CFA309E5882E5D77E0752_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract_2AA08765507CFA309E5882E5D77E0752" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_2AA08765507CFA309E5882E5D77E0752" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_2AA08765507CFA309E5882E5D77E0752" xlink:to="lab_us-gaap_IncomeTaxDisclosureAbstract_2AA08765507CFA309E5882E5D77E0752" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_018A24C2ED50CFFE19DC82E5D77EFBC3_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_018A24C2ED50CFFE19DC82E5D77EFBC3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciliation of Income Tax Benefit at Statutory Rate to Income Tax Provision</link:label>
    <link:label id="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_018A24C2ED50CFFE19DC82E5D77EFBC3_label_en-US" xlink:label="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_018A24C2ED50CFFE19DC82E5D77EFBC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_018A24C2ED50CFFE19DC82E5D77EFBC3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_018A24C2ED50CFFE19DC82E5D77EFBC3" xlink:to="lab_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_018A24C2ED50CFFE19DC82E5D77EFBC3" xlink:type="arc" />
    <link:label id="lab_us-gaap_EquityAbstract_792C7976D4EF83EAC4523136998F8CEA_label_en-US" xlink:label="lab_us-gaap_EquityAbstract_8462C13ACEAB5E4596812D5CD5BF3FAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EquityAbstract" xlink:label="loc_us-gaap_EquityAbstract_8462C13ACEAB5E4596812D5CD5BF3FAF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityAbstract_8462C13ACEAB5E4596812D5CD5BF3FAF" xlink:to="lab_us-gaap_EquityAbstract_8462C13ACEAB5E4596812D5CD5BF3FAF" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_C25A7CD1709C11C019E13136998FF9A8_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_9079022B69195766A1D2E213D3C295D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stockholders' Equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_C25A7CD1709C11C019E13136998FF9A8_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_9079022B69195766A1D2E213D3C295D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_9079022B69195766A1D2E213D3C295D3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_9079022B69195766A1D2E213D3C295D3" xlink:to="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_9079022B69195766A1D2E213D3C295D3" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_FD5D65AB70F2DD22068782E5D7D73E5A_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_FD5D65AB70F2DD22068782E5D7D73E5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred Stock:</link:label>
    <link:label id="lab_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_FD5D65AB70F2DD22068782E5D7D73E5A_label_en-US" xlink:label="lab_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_FD5D65AB70F2DD22068782E5D7D73E5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:label="loc_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_FD5D65AB70F2DD22068782E5D7D73E5A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_FD5D65AB70F2DD22068782E5D7D73E5A" xlink:to="lab_us-gaap_PreferredStockNumberOfSharesParValueAndOtherDisclosuresAbstract_FD5D65AB70F2DD22068782E5D7D73E5A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_84A444DF6436F591693382E5D7D71C1B_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_84A444DF6436F591693382E5D7D71C1B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Par value (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_84A444DF6436F591693382E5D7D71C1B_label_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_84A444DF6436F591693382E5D7D71C1B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_84A444DF6436F591693382E5D7D71C1B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockParOrStatedValuePerShare_84A444DF6436F591693382E5D7D71C1B" xlink:to="lab_us-gaap_PreferredStockParOrStatedValuePerShare_84A444DF6436F591693382E5D7D71C1B" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_559356208698F7C7AD9D82E5D7D7A7C2_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_559356208698F7C7AD9D82E5D7D7A7C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_559356208698F7C7AD9D82E5D7D7A7C2_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_559356208698F7C7AD9D82E5D7D7A7C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_559356208698F7C7AD9D82E5D7D7A7C2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesAuthorized_559356208698F7C7AD9D82E5D7D7A7C2" xlink:to="lab_us-gaap_PreferredStockSharesAuthorized_559356208698F7C7AD9D82E5D7D7A7C2" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_8331A33F911A7E9D071982E5D7D75719_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_8331A33F911A7E9D071982E5D7D75719" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_8331A33F911A7E9D071982E5D7D75719_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_8331A33F911A7E9D071982E5D7D75719" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_8331A33F911A7E9D071982E5D7D75719" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_8331A33F911A7E9D071982E5D7D75719" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_8331A33F911A7E9D071982E5D7D75719" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_23D06E38203BBBFDEE1582E5D7D76C04_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_23D06E38203BBBFDEE1582E5D7D76C04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common Stock:</link:label>
    <link:label id="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_23D06E38203BBBFDEE1582E5D7D76C04_label_en-US" xlink:label="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_23D06E38203BBBFDEE1582E5D7D76C04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:label="loc_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_23D06E38203BBBFDEE1582E5D7D76C04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_23D06E38203BBBFDEE1582E5D7D76C04" xlink:to="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_23D06E38203BBBFDEE1582E5D7D76C04" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_A436CCF983DD22FAD01082E5D7D7AB58_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_A436CCF983DD22FAD01082E5D7D7AB58" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Par value (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_A436CCF983DD22FAD01082E5D7D7AB58_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_A436CCF983DD22FAD01082E5D7D7AB58" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_A436CCF983DD22FAD01082E5D7D7AB58" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_A436CCF983DD22FAD01082E5D7D7AB58" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_A436CCF983DD22FAD01082E5D7D7AB58" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_3117EBABBD4AAAF7BDFB82E5D7D71D4F_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_3117EBABBD4AAAF7BDFB82E5D7D71D4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_3117EBABBD4AAAF7BDFB82E5D7D71D4F_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_3117EBABBD4AAAF7BDFB82E5D7D71D4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_3117EBABBD4AAAF7BDFB82E5D7D71D4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized_3117EBABBD4AAAF7BDFB82E5D7D71D4F" xlink:to="lab_us-gaap_CommonStockSharesAuthorized_3117EBABBD4AAAF7BDFB82E5D7D71D4F" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesIssued_5B47EC39BA207E971DE782E5D7D728B2_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_5B47EC39BA207E971DE782E5D7D728B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares issued (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesIssued_5B47EC39BA207E971DE782E5D7D728B2_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_5B47EC39BA207E971DE782E5D7D728B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_5B47EC39BA207E971DE782E5D7D728B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_5B47EC39BA207E971DE782E5D7D728B2" xlink:to="lab_us-gaap_CommonStockSharesIssued_5B47EC39BA207E971DE782E5D7D728B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_57052A97D8E8F79BE71482E5D7D8D548_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_57052A97D8E8F79BE71482E5D7D8D548" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares outstanding (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_57052A97D8E8F79BE71482E5D7D8D548_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_57052A97D8E8F79BE71482E5D7D8D548" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_57052A97D8E8F79BE71482E5D7D8D548" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_57052A97D8E8F79BE71482E5D7D8D548" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_57052A97D8E8F79BE71482E5D7D8D548" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_1BBD2B52E79A62533BD9207664E461D0_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_1BBD2B52E79A62533BD9207664E461D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_1BBD2B52E79A62533BD9207664E461D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_1BBD2B52E79A62533BD9207664E461D0" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_1BBD2B52E79A62533BD9207664E461D0" xlink:type="arc" />
    <link:label id="lab_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB_terseLabel_en-US" xlink:label="lab_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of subsidiaries with certain unallowable costs</link:label>
    <link:label id="lab_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB_label_en-US" xlink:label="lab_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Subsidiaries With Unallowable Costs from Defense Contract Audit Agency</link:label>
    <link:label id="lab_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB_documentation_en-US" xlink:label="lab_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Subsidiaries With Unallowable Costs from Defense Contract Audit Agency</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency" xlink:label="loc_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB" xlink:to="lab_ktos_NumberofSubsidiariesWithUnallowableCostsfromDefenseContractAuditAgency_0A26A15C84AEC2CA5839207664E46AFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesTable_0F852D0C9EF5F845B91C207664E54BC3_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_0F852D0C9EF5F845B91C207664E54BC3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesTable_0F852D0C9EF5F845B91C207664E54BC3_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_0F852D0C9EF5F845B91C207664E54BC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_0F852D0C9EF5F845B91C207664E54BC3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable_0F852D0C9EF5F845B91C207664E54BC3" xlink:to="lab_us-gaap_LossContingenciesTable_0F852D0C9EF5F845B91C207664E54BC3" xlink:type="arc" />
    <link:label id="lab_us-gaap_LitigationStatusAxis_B79EBB55FB404BC25801207664E592AF_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationStatusAxis_B79EBB55FB404BC25801207664E592AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Status [Axis]</link:label>
    <link:label id="lab_us-gaap_LitigationStatusAxis_B79EBB55FB404BC25801207664E592AF_label_en-US" xlink:label="lab_us-gaap_LitigationStatusAxis_B79EBB55FB404BC25801207664E592AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Status [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LitigationStatusAxis" xlink:label="loc_us-gaap_LitigationStatusAxis_B79EBB55FB404BC25801207664E592AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationStatusAxis_B79EBB55FB404BC25801207664E592AF" xlink:to="lab_us-gaap_LitigationStatusAxis_B79EBB55FB404BC25801207664E592AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LitigationStatusDomain_29624455C240B440C35A207664E57D9A_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationStatusDomain_29624455C240B440C35A207664E57D9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation Status [Domain]</link:label>
    <link:label id="lab_us-gaap_LitigationStatusDomain_29624455C240B440C35A207664E57D9A_label_en-US" xlink:label="lab_us-gaap_LitigationStatusDomain_29624455C240B440C35A207664E57D9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Status [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:label="loc_us-gaap_LitigationStatusDomain_29624455C240B440C35A207664E57D9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationStatusDomain_29624455C240B440C35A207664E57D9A" xlink:to="lab_us-gaap_LitigationStatusDomain_29624455C240B440C35A207664E57D9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_SettledLitigationMember_A2FA680E508199D56485207664E5DAF8_terseLabel_en-US" xlink:label="lab_us-gaap_SettledLitigationMember_A2FA680E508199D56485207664E5DAF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Settled Litigation</link:label>
    <link:label id="lab_us-gaap_SettledLitigationMember_A2FA680E508199D56485207664E5DAF8_label_en-US" xlink:label="lab_us-gaap_SettledLitigationMember_A2FA680E508199D56485207664E5DAF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settled Litigation [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SettledLitigationMember" xlink:label="loc_us-gaap_SettledLitigationMember_A2FA680E508199D56485207664E5DAF8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SettledLitigationMember_A2FA680E508199D56485207664E5DAF8" xlink:to="lab_us-gaap_SettledLitigationMember_A2FA680E508199D56485207664E5DAF8" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_ABF905AC9FEBDBC1FBA0207664E63C8D_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_ABF905AC9FEBDBC1FBA0207664E63C8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_ABF905AC9FEBDBC1FBA0207664E63C8D_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_ABF905AC9FEBDBC1FBA0207664E63C8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_ABF905AC9FEBDBC1FBA0207664E63C8D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ABF905AC9FEBDBC1FBA0207664E63C8D" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis_ABF905AC9FEBDBC1FBA0207664E63C8D" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentDomain_07EEABED0451EF2C48A4207664E69A57_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_07EEABED0451EF2C48A4207664E69A57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:label id="lab_us-gaap_SegmentDomain_07EEABED0451EF2C48A4207664E69A57_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_07EEABED0451EF2C48A4207664E69A57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_07EEABED0451EF2C48A4207664E69A57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain_07EEABED0451EF2C48A4207664E69A57" xlink:to="lab_us-gaap_SegmentDomain_07EEABED0451EF2C48A4207664E69A57" xlink:type="arc" />
    <link:label id="lab_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A_terseLabel_en-US" xlink:label="lab_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Public Safety &amp; Security</link:label>
    <link:label id="lab_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A_label_en-US" xlink:label="lab_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Public Safety and Security [Member]</link:label>
    <link:label id="lab_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A_documentation_en-US" xlink:label="lab_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Public Safety and Security [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_PublicSafetyAndSecurityMember" xlink:label="loc_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A" xlink:to="lab_ktos_PublicSafetyAndSecurityMember_40E8C5517B67EE1AE955207664E6567A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesLineItems_E4D93115A6B0C18A9899207664E68B59_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_E4D93115A6B0C18A9899207664E68B59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesLineItems_E4D93115A6B0C18A9899207664E68B59_label_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_E4D93115A6B0C18A9899207664E68B59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_E4D93115A6B0C18A9899207664E68B59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems_E4D93115A6B0C18A9899207664E68B59" xlink:to="lab_us-gaap_LossContingenciesLineItems_E4D93115A6B0C18A9899207664E68B59" xlink:type="arc" />
    <link:label id="lab_us-gaap_LitigationSettlementAmount_A34E33EDC7C8C298C410207664E67B3B_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationSettlementAmount_A34E33EDC7C8C298C410207664E67B3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Settlement amount related to unallowable costs</link:label>
    <link:label id="lab_us-gaap_LitigationSettlementAmount_A34E33EDC7C8C298C410207664E67B3B_label_en-US" xlink:label="lab_us-gaap_LitigationSettlementAmount_A34E33EDC7C8C298C410207664E67B3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation Settlement, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LitigationSettlementAmount" xlink:label="loc_us-gaap_LitigationSettlementAmount_A34E33EDC7C8C298C410207664E67B3B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationSettlementAmount_A34E33EDC7C8C298C410207664E67B3B" xlink:to="lab_us-gaap_LitigationSettlementAmount_A34E33EDC7C8C298C410207664E67B3B" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_884913812E57310A2618B72F0D51A88D_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_884913812E57310A2618B72F0D51A88D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Disposal Groups, Including Discontinued Operations [Table]</link:label>
    <link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_884913812E57310A2618B72F0D51A88D_label_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_884913812E57310A2618B72F0D51A88D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Groups, Including Discontinued Operations [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_884913812E57310A2618B72F0D51A88D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_884913812E57310A2618B72F0D51A88D" xlink:to="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_884913812E57310A2618B72F0D51A88D" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6D09C4FCEBC0EC6DDE60B72F0D51CDA2_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6D09C4FCEBC0EC6DDE60B72F0D51CDA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>
    <link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6D09C4FCEBC0EC6DDE60B72F0D51CDA2_label_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6D09C4FCEBC0EC6DDE60B72F0D51CDA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6D09C4FCEBC0EC6DDE60B72F0D51CDA2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6D09C4FCEBC0EC6DDE60B72F0D51CDA2" xlink:to="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6D09C4FCEBC0EC6DDE60B72F0D51CDA2" xlink:type="arc" />
    <link:label id="lab_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D_terseLabel_en-US" xlink:label="lab_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fiscal year duration</link:label>
    <link:label id="lab_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D_label_en-US" xlink:label="lab_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fiscal Year Duration</link:label>
    <link:label id="lab_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D_documentation_en-US" xlink:label="lab_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fiscal Year Duration</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_FiscalYearDuration" xlink:label="loc_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D" xlink:to="lab_ktos_FiscalYearDuration_2080C131B7C3C91BBB50B72F0D51E60D" xlink:type="arc" />
    <link:label id="lab_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369_terseLabel_en-US" xlink:label="lab_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">First quarter duration</link:label>
    <link:label id="lab_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369_label_en-US" xlink:label="lab_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fiscal Year To Date Duration</link:label>
    <link:label id="lab_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369_documentation_en-US" xlink:label="lab_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fiscal Year To Date Duration</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_FiscalYearToDateDuration" xlink:label="loc_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369" xlink:to="lab_ktos_FiscalYearToDateDuration_EF42EF8380412F5FBF46B72F0D51B369" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_947400DBA9FF824970BAB72F0CF9BE32_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_947400DBA9FF824970BAB72F0CF9BE32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_947400DBA9FF824970BAB72F0CF9BE32_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_947400DBA9FF824970BAB72F0CF9BE32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_947400DBA9FF824970BAB72F0CF9BE32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_947400DBA9FF824970BAB72F0CF9BE32" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_947400DBA9FF824970BAB72F0CF9BE32" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingSegmentsMember_B080C6B21E1627D79A09B72F0CF9239A_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_B080C6B21E1627D79A09B72F0CF9239A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reportable Segments</link:label>
    <link:label id="lab_us-gaap_OperatingSegmentsMember_B080C6B21E1627D79A09B72F0CF9239A_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_B080C6B21E1627D79A09B72F0CF9239A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Segments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_B080C6B21E1627D79A09B72F0CF9239A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingSegmentsMember_B080C6B21E1627D79A09B72F0CF9239A" xlink:to="lab_us-gaap_OperatingSegmentsMember_B080C6B21E1627D79A09B72F0CF9239A" xlink:type="arc" />
    <link:label id="lab_us-gaap_CorporateNonSegmentMember_DAF8EE1AA48EA19B0CA6B72F0CF97903_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_DAF8EE1AA48EA19B0CA6B72F0CF97903" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unallocated corporate expense, net</link:label>
    <link:label id="lab_us-gaap_CorporateNonSegmentMember_DAF8EE1AA48EA19B0CA6B72F0CF97903_label_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_DAF8EE1AA48EA19B0CA6B72F0CF97903" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate, Non-Segment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_DAF8EE1AA48EA19B0CA6B72F0CF97903" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporateNonSegmentMember_DAF8EE1AA48EA19B0CA6B72F0CF97903" xlink:to="lab_us-gaap_CorporateNonSegmentMember_DAF8EE1AA48EA19B0CA6B72F0CF97903" xlink:type="arc" />
    <link:label id="lab_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532_terseLabel_en-US" xlink:label="lab_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Kratos Government Solutions</link:label>
    <link:label id="lab_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532_label_en-US" xlink:label="lab_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Kratos Government Solutions [Member]</link:label>
    <link:label id="lab_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532_documentation_en-US" xlink:label="lab_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Kratos Government Solutions operating/reportable segment</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_KratosGovernmentSolutionsMember" xlink:label="loc_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532" xlink:to="lab_ktos_KratosGovernmentSolutionsMember_332DB153FD32D876E3D1B72F0CF9C532" xlink:type="arc" />
    <link:label id="lab_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B_terseLabel_en-US" xlink:label="lab_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unmanned Systems</link:label>
    <link:label id="lab_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B_label_en-US" xlink:label="lab_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Kratos Unmanned Systems [Member]</link:label>
    <link:label id="lab_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B_documentation_en-US" xlink:label="lab_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Kratos Unmanned Systems [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_KratosUnmannedSystemsMember" xlink:label="loc_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B" xlink:to="lab_ktos_KratosUnmannedSystemsMember_AFBD81CF0E56932F411BB72F0CF9157B" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_38D37C1E8D2E9D48511DB72F0CF95E59_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_38D37C1E8D2E9D48511DB72F0CF95E59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_38D37C1E8D2E9D48511DB72F0CF95E59_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_38D37C1E8D2E9D48511DB72F0CF95E59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_38D37C1E8D2E9D48511DB72F0CF95E59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_38D37C1E8D2E9D48511DB72F0CF95E59" xlink:to="lab_us-gaap_SegmentReportingInformationLineItems_38D37C1E8D2E9D48511DB72F0CF95E59" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenuesAbstract_D4D561806DD63B0D2166B72F0CF99DC7_terseLabel_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_D4D561806DD63B0D2166B72F0CF99DC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues:</link:label>
    <link:label id="lab_us-gaap_RevenuesAbstract_D4D561806DD63B0D2166B72F0CF99DC7_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_D4D561806DD63B0D2166B72F0CF99DC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_D4D561806DD63B0D2166B72F0CF99DC7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenuesAbstract_D4D561806DD63B0D2166B72F0CF99DC7" xlink:to="lab_us-gaap_RevenuesAbstract_D4D561806DD63B0D2166B72F0CF99DC7" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract_9B4D113EDD0D524CA451B72F0CFA7F35_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract_9B4D113EDD0D524CA451B72F0CFA7F35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation &amp; amortization:</link:label>
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract_9B4D113EDD0D524CA451B72F0CFA7F35_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract_9B4D113EDD0D524CA451B72F0CFA7F35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization, Nonproduction [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract_9B4D113EDD0D524CA451B72F0CFA7F35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract_9B4D113EDD0D524CA451B72F0CFA7F35" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortizationNonproductionAbstract_9B4D113EDD0D524CA451B72F0CFA7F35" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_CA0670FDC0B5179548C2B72F0CFA03BC_verboseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_CA0670FDC0B5179548C2B72F0CFA03BC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total depreciation and amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_CA0670FDC0B5179548C2B72F0CFA03BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortization_CA0670FDC0B5179548C2B72F0CFA03BC" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortization_CA0670FDC0B5179548C2B72F0CFA03BC" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingIncomeLossAbstract_7BD0CE58E0EF36C7663BB72F0CFA46C1_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLossAbstract_7BD0CE58E0EF36C7663BB72F0CFA46C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating income (loss) from continuing operations:</link:label>
    <link:label id="lab_us-gaap_OperatingIncomeLossAbstract_7BD0CE58E0EF36C7663BB72F0CFA46C1_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLossAbstract_7BD0CE58E0EF36C7663BB72F0CFA46C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Income (Loss) [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingIncomeLossAbstract" xlink:label="loc_us-gaap_OperatingIncomeLossAbstract_7BD0CE58E0EF36C7663BB72F0CFA46C1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLossAbstract_7BD0CE58E0EF36C7663BB72F0CFA46C1" xlink:to="lab_us-gaap_OperatingIncomeLossAbstract_7BD0CE58E0EF36C7663BB72F0CFA46C1" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingIncomeLoss_84DB73500C812ADEF71DB72F0CFAE350_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_84DB73500C812ADEF71DB72F0CFAE350" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total operating income (loss) from continuing operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_84DB73500C812ADEF71DB72F0CFAE350" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_84DB73500C812ADEF71DB72F0CFAE350" xlink:to="lab_us-gaap_OperatingIncomeLoss_84DB73500C812ADEF71DB72F0CFAE350" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_82987A2F970D2DAF408D3136998DF81A_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_E0BC149C61745FBB99A08E6B7067BA18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Changes in Stockholders' Equity</link:label>
    <link:label id="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_82987A2F970D2DAF408D3136998DF81A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_E0BC149C61745FBB99A08E6B7067BA18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Stockholders Equity [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfStockholdersEquityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_E0BC149C61745FBB99A08E6B7067BA18" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_E0BC149C61745FBB99A08E6B7067BA18" xlink:to="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_E0BC149C61745FBB99A08E6B7067BA18" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_D25D5D4F928360E922C13136998D6CB2_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_2BE69C5F2FB3502694BA04B2D1FD8BCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Components of Accumulated Other Comprehensive Loss</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_D25D5D4F928360E922C13136998D6CB2_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_2BE69C5F2FB3502694BA04B2D1FD8BCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_2BE69C5F2FB3502694BA04B2D1FD8BCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_2BE69C5F2FB3502694BA04B2D1FD8BCD" xlink:to="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_2BE69C5F2FB3502694BA04B2D1FD8BCD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock_13F3999EDC41E49DE8743136998D3AFD_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock_08CCCB31B86350FFA7DA5C065415B7D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rollforward of Common Stock Outstanding</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock_13F3999EDC41E49DE8743136998D3AFD_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock_08CCCB31B86350FFA7DA5C065415B7D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Common Stock Outstanding Roll Forward [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock_08CCCB31B86350FFA7DA5C065415B7D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock_08CCCB31B86350FFA7DA5C065415B7D8" xlink:to="lab_us-gaap_ScheduleOfCommonStockOutstandingRollForwardTableTextBlock_08CCCB31B86350FFA7DA5C065415B7D8" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtFairValue_19835AC34BAEE54B980FB09ECA7DBA09_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_19835AC34BAEE54B980FB09ECA7DBA09" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_us-gaap_LongTermDebtFairValue_19835AC34BAEE54B980FB09ECA7DBA09_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_19835AC34BAEE54B980FB09ECA7DBA09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_19835AC34BAEE54B980FB09ECA7DBA09" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtFairValue_19835AC34BAEE54B980FB09ECA7DBA09" xlink:to="lab_us-gaap_LongTermDebtFairValue_19835AC34BAEE54B980FB09ECA7DBA09" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_5961E6B3C26C2FC66F21B09ECA7D5AAB_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_5961E6B3C26C2FC66F21B09ECA7D5AAB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net unamortized original issue discount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_5961E6B3C26C2FC66F21B09ECA7D5AAB_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_5961E6B3C26C2FC66F21B09ECA7D5AAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unamortized Discount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_5961E6B3C26C2FC66F21B09ECA7D5AAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscount_5961E6B3C26C2FC66F21B09ECA7D5AAB" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedDiscount_5961E6B3C26C2FC66F21B09ECA7D5AAB" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnamortizedDebtIssuanceExpense_9EA3892536FDEEE4DB35B0AD8FD04845_terseLabel_en-US" xlink:label="lab_us-gaap_UnamortizedDebtIssuanceExpense_9EA3892536FDEEE4DB35B0AD8FD04845" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unamortized issuance cost</link:label>
    <link:label id="lab_us-gaap_UnamortizedDebtIssuanceExpense_9EA3892536FDEEE4DB35B0AD8FD04845_label_en-US" xlink:label="lab_us-gaap_UnamortizedDebtIssuanceExpense_9EA3892536FDEEE4DB35B0AD8FD04845" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unamortized Debt Issuance Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UnamortizedDebtIssuanceExpense" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_9EA3892536FDEEE4DB35B0AD8FD04845" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnamortizedDebtIssuanceExpense_9EA3892536FDEEE4DB35B0AD8FD04845" xlink:to="lab_us-gaap_UnamortizedDebtIssuanceExpense_9EA3892536FDEEE4DB35B0AD8FD04845" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryDisclosureTextBlock_31147787790A8F9D3EAF31369996EA8E_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_53FF2626D63950348B02E82466DCE6A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventoried Costs</link:label>
    <link:label id="lab_us-gaap_InventoryDisclosureTextBlock_31147787790A8F9D3EAF31369996EA8E_label_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_53FF2626D63950348B02E82466DCE6A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="loc_us-gaap_InventoryDisclosureTextBlock_53FF2626D63950348B02E82466DCE6A9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryDisclosureTextBlock_53FF2626D63950348B02E82466DCE6A9" xlink:to="lab_us-gaap_InventoryDisclosureTextBlock_53FF2626D63950348B02E82466DCE6A9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_2A0BE8EE44CDB461FF9131369943294D_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_47BD4B719AFA590683271BDAB81BFA7A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Segment Revenues, Depreciation and Amortization, and Operating Income (Loss)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_2A0BE8EE44CDB461FF9131369943294D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_47BD4B719AFA590683271BDAB81BFA7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_47BD4B719AFA590683271BDAB81BFA7A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_47BD4B719AFA590683271BDAB81BFA7A" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_47BD4B719AFA590683271BDAB81BFA7A" xlink:type="arc" />
    <link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_E4DAFF7238EF9BB7D51B79B1D123EB6A_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_989CF05D592E5B7D97332DDC5BA1E7A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of Presentation</link:label>
    <link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_E4DAFF7238EF9BB7D51B79B1D123EB6A_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_989CF05D592E5B7D97332DDC5BA1E7A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Accounting, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_989CF05D592E5B7D97332DDC5BA1E7A9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_989CF05D592E5B7D97332DDC5BA1E7A9" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_989CF05D592E5B7D97332DDC5BA1E7A9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_2FBA5ABF5CB49A17CBAA79B1D123562D_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_E8C82FEEB2C0534BB3CEC1035F70A2AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principles of Consolidation</link:label>
    <link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_2FBA5ABF5CB49A17CBAA79B1D123562D_label_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_E8C82FEEB2C0534BB3CEC1035F70A2AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock_E8C82FEEB2C0534BB3CEC1035F70A2AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationPolicyTextBlock_E8C82FEEB2C0534BB3CEC1035F70A2AC" xlink:to="lab_us-gaap_ConsolidationPolicyTextBlock_E8C82FEEB2C0534BB3CEC1035F70A2AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiscalPeriod_FBE466D275C640C5099C79B1D123B935_terseLabel_en-US" xlink:label="lab_us-gaap_FiscalPeriod_9E94DCC9EB0857E08148A266C292B7B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fiscal Year</link:label>
    <link:label id="lab_us-gaap_FiscalPeriod_FBE466D275C640C5099C79B1D123B935_label_en-US" xlink:label="lab_us-gaap_FiscalPeriod_9E94DCC9EB0857E08148A266C292B7B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fiscal Period, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiscalPeriod" xlink:label="loc_us-gaap_FiscalPeriod_9E94DCC9EB0857E08148A266C292B7B1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiscalPeriod_9E94DCC9EB0857E08148A266C292B7B1" xlink:to="lab_us-gaap_FiscalPeriod_9E94DCC9EB0857E08148A266C292B7B1" xlink:type="arc" />
    <link:label id="lab_us-gaap_UseOfEstimates_EF711F8EDBBA4CB237A679B1D1232EDF_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_BAE8333F7A8E55908A3D974966C9E662" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounting Estimates</link:label>
    <link:label id="lab_us-gaap_UseOfEstimates_EF711F8EDBBA4CB237A679B1D1232EDF_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_BAE8333F7A8E55908A3D974966C9E662" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Use of Estimates, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_BAE8333F7A8E55908A3D974966C9E662" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates_BAE8333F7A8E55908A3D974966C9E662" xlink:to="lab_us-gaap_UseOfEstimates_BAE8333F7A8E55908A3D974966C9E662" xlink:type="arc" />
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_F972B818276C2BA9200E79B1D1235553_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BA0CCBE99F1D516CB6056A617E74ED52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounting Standards Updates</link:label>
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_F972B818276C2BA9200E79B1D1235553_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BA0CCBE99F1D516CB6056A617E74ED52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BA0CCBE99F1D516CB6056A617E74ED52" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BA0CCBE99F1D516CB6056A617E74ED52" xlink:to="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BA0CCBE99F1D516CB6056A617E74ED52" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_DCDB7A85B16436CA599B79B1D1233500_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_21D1F81566D05F49A18E3110189057F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value of Financial Instruments</link:label>
    <link:label id="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_DCDB7A85B16436CA599B79B1D1233500_label_en-US" xlink:label="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_21D1F81566D05F49A18E3110189057F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value of Financial Instruments, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_21D1F81566D05F49A18E3110189057F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_21D1F81566D05F49A18E3110189057F7" xlink:to="lab_us-gaap_FairValueOfFinancialInstrumentsPolicy_21D1F81566D05F49A18E3110189057F7" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerSharePolicyTextBlock_8E105564A53336BE093E79B1D1236E79_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerSharePolicyTextBlock_C03B018CE93C55B78A1FF41F3A91829A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Per Common Share</link:label>
    <link:label id="lab_us-gaap_EarningsPerSharePolicyTextBlock_8E105564A53336BE093E79B1D1236E79_label_en-US" xlink:label="lab_us-gaap_EarningsPerSharePolicyTextBlock_C03B018CE93C55B78A1FF41F3A91829A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="loc_us-gaap_EarningsPerSharePolicyTextBlock_C03B018CE93C55B78A1FF41F3A91829A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerSharePolicyTextBlock_C03B018CE93C55B78A1FF41F3A91829A" xlink:to="lab_us-gaap_EarningsPerSharePolicyTextBlock_C03B018CE93C55B78A1FF41F3A91829A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PublicUtilitiesInventoryAxis_4521EB0350293F49077ECA5DAF6EF581_terseLabel_en-US" xlink:label="lab_us-gaap_PublicUtilitiesInventoryAxis_4521EB0350293F49077ECA5DAF6EF581" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventory [Axis]</link:label>
    <link:label id="lab_us-gaap_PublicUtilitiesInventoryAxis_4521EB0350293F49077ECA5DAF6EF581_label_en-US" xlink:label="lab_us-gaap_PublicUtilitiesInventoryAxis_4521EB0350293F49077ECA5DAF6EF581" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryAxis" xlink:label="loc_us-gaap_PublicUtilitiesInventoryAxis_4521EB0350293F49077ECA5DAF6EF581" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_4521EB0350293F49077ECA5DAF6EF581" xlink:to="lab_us-gaap_PublicUtilitiesInventoryAxis_4521EB0350293F49077ECA5DAF6EF581" xlink:type="arc" />
    <link:label id="lab_us-gaap_PublicUtilitiesInventoryTypeDomain_BEE03F4719AA8A9AF431CA5DAF6EF909_terseLabel_en-US" xlink:label="lab_us-gaap_PublicUtilitiesInventoryTypeDomain_BEE03F4719AA8A9AF431CA5DAF6EF909" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventory [Domain]</link:label>
    <link:label id="lab_us-gaap_PublicUtilitiesInventoryTypeDomain_BEE03F4719AA8A9AF431CA5DAF6EF909_label_en-US" xlink:label="lab_us-gaap_PublicUtilitiesInventoryTypeDomain_BEE03F4719AA8A9AF431CA5DAF6EF909" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_BEE03F4719AA8A9AF431CA5DAF6EF909" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_BEE03F4719AA8A9AF431CA5DAF6EF909" xlink:to="lab_us-gaap_PublicUtilitiesInventoryTypeDomain_BEE03F4719AA8A9AF431CA5DAF6EF909" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoriesMember_4E8C9010569E6A13B94ECA5DAF6EAE72_terseLabel_en-US" xlink:label="lab_us-gaap_InventoriesMember_4E8C9010569E6A13B94ECA5DAF6EAE72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_us-gaap_InventoriesMember_4E8C9010569E6A13B94ECA5DAF6EAE72_label_en-US" xlink:label="lab_us-gaap_InventoriesMember_4E8C9010569E6A13B94ECA5DAF6EAE72" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventories [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoriesMember" xlink:label="loc_us-gaap_InventoriesMember_4E8C9010569E6A13B94ECA5DAF6EAE72" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoriesMember_4E8C9010569E6A13B94ECA5DAF6EAE72" xlink:to="lab_us-gaap_InventoriesMember_4E8C9010569E6A13B94ECA5DAF6EAE72" xlink:type="arc" />
    <link:label id="lab_us-gaap_NumberOfReportableSegments_FB701DE0D72673EBE94CCA5DAF6E6464_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_FB701DE0D72673EBE94CCA5DAF6E6464" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of reportable segments</link:label>
    <link:label id="lab_us-gaap_NumberOfReportableSegments_FB701DE0D72673EBE94CCA5DAF6E6464_label_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_FB701DE0D72673EBE94CCA5DAF6E6464" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Reportable Segments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_FB701DE0D72673EBE94CCA5DAF6E6464" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfReportableSegments_FB701DE0D72673EBE94CCA5DAF6E6464" xlink:to="lab_us-gaap_NumberOfReportableSegments_FB701DE0D72673EBE94CCA5DAF6E6464" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetImpairmentCharges_6A58175B6D6E0E768F27CA5DAF6E3A2E_terseLabel_en-US" xlink:label="lab_us-gaap_AssetImpairmentCharges_6A58175B6D6E0E768F27CA5DAF6E3A2E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment charges relating to inventories</link:label>
    <link:label id="lab_us-gaap_AssetImpairmentCharges_6A58175B6D6E0E768F27CA5DAF6E3A2E_label_en-US" xlink:label="lab_us-gaap_AssetImpairmentCharges_6A58175B6D6E0E768F27CA5DAF6E3A2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Impairment Charges</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="loc_us-gaap_AssetImpairmentCharges_6A58175B6D6E0E768F27CA5DAF6E3A2E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetImpairmentCharges_6A58175B6D6E0E768F27CA5DAF6E3A2E" xlink:to="lab_us-gaap_AssetImpairmentCharges_6A58175B6D6E0E768F27CA5DAF6E3A2E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_4292DA4C32A8CE96E67182E5D6A4F464_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_4292DA4C32A8CE96E67182E5D6A4F464" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Revenue by Major Customers, by Reportiing Segments [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_4292DA4C32A8CE96E67182E5D6A4F464_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_4292DA4C32A8CE96E67182E5D6A4F464" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Revenue by Major Customers, by Reporting Segments [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_4292DA4C32A8CE96E67182E5D6A4F464" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_4292DA4C32A8CE96E67182E5D6A4F464" xlink:to="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_4292DA4C32A8CE96E67182E5D6A4F464" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_711AC3E94702EB5A545F82E5D6A544E7_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_711AC3E94702EB5A545F82E5D6A544E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_711AC3E94702EB5A545F82E5D6A544E7_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_711AC3E94702EB5A545F82E5D6A544E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_711AC3E94702EB5A545F82E5D6A544E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_711AC3E94702EB5A545F82E5D6A544E7" xlink:to="lab_us-gaap_ConcentrationRiskByTypeAxis_711AC3E94702EB5A545F82E5D6A544E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_046450FDCE7D495D3C3482E5D6A5FF10_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_046450FDCE7D495D3C3482E5D6A5FF10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_046450FDCE7D495D3C3482E5D6A5FF10_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_046450FDCE7D495D3C3482E5D6A5FF10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_046450FDCE7D495D3C3482E5D6A5FF10" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_046450FDCE7D495D3C3482E5D6A5FF10" xlink:to="lab_us-gaap_ConcentrationRiskTypeDomain_046450FDCE7D495D3C3482E5D6A5FF10" xlink:type="arc" />
    <link:label id="lab_us-gaap_GovernmentContractsConcentrationRiskMember_A209A1A533A2F5085B3482E5D6A5D5B2_terseLabel_en-US" xlink:label="lab_us-gaap_GovernmentContractsConcentrationRiskMember_A209A1A533A2F5085B3482E5D6A5D5B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government contracts</link:label>
    <link:label id="lab_us-gaap_GovernmentContractsConcentrationRiskMember_A209A1A533A2F5085B3482E5D6A5D5B2_label_en-US" xlink:label="lab_us-gaap_GovernmentContractsConcentrationRiskMember_A209A1A533A2F5085B3482E5D6A5D5B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Contracts Concentration Risk [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GovernmentContractsConcentrationRiskMember" xlink:label="loc_us-gaap_GovernmentContractsConcentrationRiskMember_A209A1A533A2F5085B3482E5D6A5D5B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GovernmentContractsConcentrationRiskMember_A209A1A533A2F5085B3482E5D6A5D5B2" xlink:to="lab_us-gaap_GovernmentContractsConcentrationRiskMember_A209A1A533A2F5085B3482E5D6A5D5B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_58ED3E686100BD51789082E5D6AAB9D0_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_58ED3E686100BD51789082E5D6AAB9D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_58ED3E686100BD51789082E5D6AAB9D0_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_58ED3E686100BD51789082E5D6AAB9D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_58ED3E686100BD51789082E5D6AAB9D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_58ED3E686100BD51789082E5D6AAB9D0" xlink:to="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_58ED3E686100BD51789082E5D6AAB9D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_89EED8011800AF9D1D1782E5D6AA59AA_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_89EED8011800AF9D1D1782E5D6AA59AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_89EED8011800AF9D1D1782E5D6AA59AA_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_89EED8011800AF9D1D1782E5D6AA59AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_89EED8011800AF9D1D1782E5D6AA59AA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_89EED8011800AF9D1D1782E5D6AA59AA" xlink:to="lab_us-gaap_ConcentrationRiskBenchmarkDomain_89EED8011800AF9D1D1782E5D6AA59AA" xlink:type="arc" />
    <link:label id="lab_us-gaap_SalesRevenueNetMember_D9DA3BE4C0187708FDD782E5D6AA9836_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_D9DA3BE4C0187708FDD782E5D6AA9836" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue</link:label>
    <link:label id="lab_us-gaap_SalesRevenueNetMember_D9DA3BE4C0187708FDD782E5D6AA9836_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_D9DA3BE4C0187708FDD782E5D6AA9836" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Revenue, Net [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SalesRevenueNetMember" xlink:label="loc_us-gaap_SalesRevenueNetMember_D9DA3BE4C0187708FDD782E5D6AA9836" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNetMember_D9DA3BE4C0187708FDD782E5D6AA9836" xlink:to="lab_us-gaap_SalesRevenueNetMember_D9DA3BE4C0187708FDD782E5D6AA9836" xlink:type="arc" />
    <link:label id="lab_us-gaap_MajorCustomersAxis_187C30ACF1837F94001A82E5D6AB37E9_terseLabel_en-US" xlink:label="lab_us-gaap_MajorCustomersAxis_187C30ACF1837F94001A82E5D6AB37E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major Customers [Axis]</link:label>
    <link:label id="lab_us-gaap_MajorCustomersAxis_187C30ACF1837F94001A82E5D6AB37E9_label_en-US" xlink:label="lab_us-gaap_MajorCustomersAxis_187C30ACF1837F94001A82E5D6AB37E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="loc_us-gaap_MajorCustomersAxis_187C30ACF1837F94001A82E5D6AB37E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MajorCustomersAxis_187C30ACF1837F94001A82E5D6AB37E9" xlink:to="lab_us-gaap_MajorCustomersAxis_187C30ACF1837F94001A82E5D6AB37E9" xlink:type="arc" />
    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_82C3B90E05C0498AF7B082E5D6AB151B_terseLabel_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_82C3B90E05C0498AF7B082E5D6AB151B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name of Major Customer [Domain]</link:label>
    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_82C3B90E05C0498AF7B082E5D6AB151B_label_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_82C3B90E05C0498AF7B082E5D6AB151B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_82C3B90E05C0498AF7B082E5D6AB151B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_82C3B90E05C0498AF7B082E5D6AB151B" xlink:to="lab_us-gaap_NameOfMajorCustomerDomain_82C3B90E05C0498AF7B082E5D6AB151B" xlink:type="arc" />
    <link:label id="lab_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5_terseLabel_en-US" xlink:label="lab_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">U.S. Government</link:label>
    <link:label id="lab_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5_label_en-US" xlink:label="lab_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">U.S. Government [Member]</link:label>
    <link:label id="lab_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5_documentation_en-US" xlink:label="lab_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">U.S. Government, major customer [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_USGovernmentMember" xlink:label="loc_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5" xlink:to="lab_ktos_USGovernmentMember_4D1D83F8790DAC61C33782E5D6AB72E5" xlink:type="arc" />
    <link:label id="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_F4B7490086F9875024E682E5D6AB4770_terseLabel_en-US" xlink:label="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_F4B7490086F9875024E682E5D6AB4770" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue, Major Customer [Line Items]</link:label>
    <link:label id="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_F4B7490086F9875024E682E5D6AB4770_label_en-US" xlink:label="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_F4B7490086F9875024E682E5D6AB4770" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Major Customer [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems" xlink:label="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_F4B7490086F9875024E682E5D6AB4770" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_F4B7490086F9875024E682E5D6AB4770" xlink:to="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_F4B7490086F9875024E682E5D6AB4770" xlink:type="arc" />
    <link:label id="lab_us-gaap_Revenues_C7736361B99691622FED82E5D6ABE367_verboseLabel_en-US" xlink:label="lab_us-gaap_Revenues_C7736361B99691622FED82E5D6ABE367" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Sales to the U.S. Government, amount</link:label>
    <link:label id="lab_us-gaap_Revenues_C7736361B99691622FED82E5D6ABE367_label_en-US" xlink:label="lab_us-gaap_Revenues_C7736361B99691622FED82E5D6ABE367" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_C7736361B99691622FED82E5D6ABE367" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Revenues_C7736361B99691622FED82E5D6ABE367" xlink:to="lab_us-gaap_Revenues_C7736361B99691622FED82E5D6ABE367" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_D457376DEB0F9C6CFB4B82E5D6AB2B4C_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_D457376DEB0F9C6CFB4B82E5D6AB2B4C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales to the U.S. Government, percentage of total revenue (percent)</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_D457376DEB0F9C6CFB4B82E5D6AB2B4C_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_D457376DEB0F9C6CFB4B82E5D6AB2B4C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_D457376DEB0F9C6CFB4B82E5D6AB2B4C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskPercentage1_D457376DEB0F9C6CFB4B82E5D6AB2B4C" xlink:to="lab_us-gaap_ConcentrationRiskPercentage1_D457376DEB0F9C6CFB4B82E5D6AB2B4C" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0FD603634581FC6BC071313699A9E02B_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_28717FEA99005E2F9BA4FF3A2335879C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_28717FEA99005E2F9BA4FF3A2335879C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_28717FEA99005E2F9BA4FF3A2335879C" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_28717FEA99005E2F9BA4FF3A2335879C" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_C429C979D70F71CC4ABF313699A93FB6_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_FDADCE4862A15CB5A136960B8DE617EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets</link:label>
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_C429C979D70F71CC4ABF313699A93FB6_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_FDADCE4862A15CB5A136960B8DE617EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_FDADCE4862A15CB5A136960B8DE617EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_FDADCE4862A15CB5A136960B8DE617EB" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_FDADCE4862A15CB5A136960B8DE617EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_5CFE8900A1DCF8B5D8493136997BFB2E_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_378A47B874BC5D1B9DC6771832DE9215" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_5CFE8900A1DCF8B5D8493136997BFB2E_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_378A47B874BC5D1B9DC6771832DE9215" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_378A47B874BC5D1B9DC6771832DE9215" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureTextBlock_378A47B874BC5D1B9DC6771832DE9215" xlink:to="lab_us-gaap_IncomeTaxDisclosureTextBlock_378A47B874BC5D1B9DC6771832DE9215" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_19ECD53F1D30A87D2BB2B066D581F447_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_19ECD53F1D30A87D2BB2B066D581F447" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_19ECD53F1D30A87D2BB2B066D581F447_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_19ECD53F1D30A87D2BB2B066D581F447" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_19ECD53F1D30A87D2BB2B066D581F447" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_19ECD53F1D30A87D2BB2B066D581F447" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_19ECD53F1D30A87D2BB2B066D581F447" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_B80BBBEE909AB19189C1B066D58187CE_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_B80BBBEE909AB19189C1B066D58187CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_B80BBBEE909AB19189C1B066D58187CE_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_B80BBBEE909AB19189C1B066D58187CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_B80BBBEE909AB19189C1B066D58187CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_B80BBBEE909AB19189C1B066D58187CE" xlink:to="lab_us-gaap_StatementEquityComponentsAxis_B80BBBEE909AB19189C1B066D58187CE" xlink:type="arc" />
    <link:label id="lab_us-gaap_EquityComponentDomain_19974963FD2F5F04341EB066D5817034_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_19974963FD2F5F04341EB066D5817034" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:label id="lab_us-gaap_EquityComponentDomain_19974963FD2F5F04341EB066D5817034_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_19974963FD2F5F04341EB066D5817034" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_19974963FD2F5F04341EB066D5817034" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain_19974963FD2F5F04341EB066D5817034" xlink:to="lab_us-gaap_EquityComponentDomain_19974963FD2F5F04341EB066D5817034" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedTranslationAdjustmentMember_A5BBAF6C6E8746BFF619B066D5821E26_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedTranslationAdjustmentMember_A5BBAF6C6E8746BFF619B066D5821E26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cumulative translation adjustment</link:label>
    <link:label id="lab_us-gaap_AccumulatedTranslationAdjustmentMember_A5BBAF6C6E8746BFF619B066D5821E26_label_en-US" xlink:label="lab_us-gaap_AccumulatedTranslationAdjustmentMember_A5BBAF6C6E8746BFF619B066D5821E26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Foreign Currency Adjustment Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_A5BBAF6C6E8746BFF619B066D5821E26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedTranslationAdjustmentMember_A5BBAF6C6E8746BFF619B066D5821E26" xlink:to="lab_us-gaap_AccumulatedTranslationAdjustmentMember_A5BBAF6C6E8746BFF619B066D5821E26" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_8A67E471517651F2A859B066D582B6D5_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_8A67E471517651F2A859B066D582B6D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Post-retirement benefit reserve adjustment net of tax expense</link:label>
    <link:label id="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_8A67E471517651F2A859B066D582B6D5_label_en-US" xlink:label="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_8A67E471517651F2A859B066D582B6D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_8A67E471517651F2A859B066D582B6D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_8A67E471517651F2A859B066D582B6D5" xlink:to="lab_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_8A67E471517651F2A859B066D582B6D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_41B4D0313BEED4825306B066D58254FC_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_41B4D0313BEED4825306B066D58254FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_41B4D0313BEED4825306B066D58254FC_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_41B4D0313BEED4825306B066D58254FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_41B4D0313BEED4825306B066D58254FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_41B4D0313BEED4825306B066D58254FC" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_41B4D0313BEED4825306B066D58254FC" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D453DED98E9F0709894CB066D582618C_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D453DED98E9F0709894CB066D582618C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total accumulated other comprehensive loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D453DED98E9F0709894CB066D582618C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D453DED98E9F0709894CB066D582618C" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D453DED98E9F0709894CB066D582618C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_565EE6C1A5D12EA15292B066D5824027_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_565EE6C1A5D12EA15292B066D5824027" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassifications from other comprehensive income</link:label>
    <link:label id="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_565EE6C1A5D12EA15292B066D5824027_label_en-US" xlink:label="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_565EE6C1A5D12EA15292B066D5824027" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_565EE6C1A5D12EA15292B066D5824027" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_565EE6C1A5D12EA15292B066D5824027" xlink:to="lab_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_565EE6C1A5D12EA15292B066D5824027" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_8654F85A89C164EF75F282E5D77B2A44_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_8654F85A89C164EF75F282E5D77B2A44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]</link:label>
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_8654F85A89C164EF75F282E5D77B2A44_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_8654F85A89C164EF75F282E5D77B2A44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Amount [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_8654F85A89C164EF75F282E5D77B2A44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_8654F85A89C164EF75F282E5D77B2A44" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_8654F85A89C164EF75F282E5D77B2A44" xlink:type="arc" />
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_A06CEA99FD73B89C017282E5D77B82E6_terseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_A06CEA99FD73B89C017282E5D77B82E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal statutory income tax rate (percent)</link:label>
    <link:label id="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_A06CEA99FD73B89C017282E5D77B82E6_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_A06CEA99FD73B89C017282E5D77B82E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_A06CEA99FD73B89C017282E5D77B82E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_A06CEA99FD73B89C017282E5D77B82E6" xlink:to="lab_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_A06CEA99FD73B89C017282E5D77B82E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_744D513A6F06267E545E82E5D77B7B7E_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_744D513A6F06267E545E82E5D77B7B7E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income tax benefit at federal statutory rate</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_744D513A6F06267E545E82E5D77B7B7E_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_744D513A6F06267E545E82E5D77B7B7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_744D513A6F06267E545E82E5D77B7B7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_744D513A6F06267E545E82E5D77B7B7E" xlink:to="lab_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_744D513A6F06267E545E82E5D77B7B7E" xlink:type="arc" />
    <link:label id="lab_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84_verboseLabel_en-US" xlink:label="lab_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">State and foreign taxes, net of federal tax benefit and valuation allowance</link:label>
    <link:label id="lab_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84_label_en-US" xlink:label="lab_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Reconciliation State Income Taxes And Foreign Income Tax Rate Differential</link:label>
    <link:label id="lab_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84_documentation_en-US" xlink:label="lab_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Current State And Foreign Tax Expense Benefit</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential" xlink:label="loc_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84" xlink:to="lab_ktos_IncomeTaxReconciliationStateIncomeTaxesAndForeignIncomeTaxRateDifferential_B9461C70C89C0C8ED59D82E5D77B4E84" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther_416F7C6298F30986862582E5D77B6173_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther_416F7C6298F30986862582E5D77B6173" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nondeductible expenses and other</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther_416F7C6298F30986862582E5D77B6173_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther_416F7C6298F30986862582E5D77B6173" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther_416F7C6298F30986862582E5D77B6173" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther_416F7C6298F30986862582E5D77B6173" xlink:to="lab_us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther_416F7C6298F30986862582E5D77B6173" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments_C8A3C2D31EEB3DCDB83F82E5D77CB09C_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments_C8A3C2D31EEB3DCDB83F82E5D77CB09C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impact of deferred tax liabilities for indefinite-lived assets</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments_C8A3C2D31EEB3DCDB83F82E5D77CB09C_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments_C8A3C2D31EEB3DCDB83F82E5D77CB09C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Other Adjustments, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_C8A3C2D31EEB3DCDB83F82E5D77CB09C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_C8A3C2D31EEB3DCDB83F82E5D77CB09C" xlink:to="lab_us-gaap_IncomeTaxReconciliationOtherAdjustments_C8A3C2D31EEB3DCDB83F82E5D77CB09C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxReconciliationTaxContingencies_F475BEA03ECC664B3CDE82E5D77CF331_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxContingencies_F475BEA03ECC664B3CDE82E5D77CF331" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in reserves for uncertain tax positions</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationTaxContingencies_F475BEA03ECC664B3CDE82E5D77CF331_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxContingencies_F475BEA03ECC664B3CDE82E5D77CF331" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Tax Contingency, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxContingencies" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxContingencies_F475BEA03ECC664B3CDE82E5D77CF331" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxReconciliationTaxContingencies_F475BEA03ECC664B3CDE82E5D77CF331" xlink:to="lab_us-gaap_IncomeTaxReconciliationTaxContingencies_F475BEA03ECC664B3CDE82E5D77CF331" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_F5147ED47936D9B2045882E5D77CC4AB_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_F5147ED47936D9B2045882E5D77CC4AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in federal valuation allowance</link:label>
    <link:label id="lab_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_F5147ED47936D9B2045882E5D77CC4AB_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_F5147ED47936D9B2045882E5D77CC4AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_F5147ED47936D9B2045882E5D77CC4AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_F5147ED47936D9B2045882E5D77CC4AB" xlink:to="lab_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_F5147ED47936D9B2045882E5D77CC4AB" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_55DE6A292EF4E3016B6782E5D77C4111_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_55DE6A292EF4E3016B6782E5D77C4111" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total income tax provision</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_55DE6A292EF4E3016B6782E5D77C4111" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_55DE6A292EF4E3016B6782E5D77C4111" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_55DE6A292EF4E3016B6782E5D77C4111" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_4E0515EE313F11FB32F231369994EB67_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_915FB029339F5F94881F66B1BC84425C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Inventoried Costs</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_4E0515EE313F11FB32F231369994EB67_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_915FB029339F5F94881F66B1BC84425C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Inventory, Current [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_915FB029339F5F94881F66B1BC84425C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_915FB029339F5F94881F66B1BC84425C" xlink:to="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_915FB029339F5F94881F66B1BC84425C" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_85F1BCABF626CAC9F98DB066D57E499B_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_85F1BCABF626CAC9F98DB066D57E499B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_85F1BCABF626CAC9F98DB066D57E499B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_85F1BCABF626CAC9F98DB066D57E499B" xlink:to="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_85F1BCABF626CAC9F98DB066D57E499B" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_34659FBE94F6F73F0E49B066D57EC097_periodStartLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_34659FBE94F6F73F0E49B066D57EC097" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Shares outstanding at beginning of the period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_34659FBE94F6F73F0E49B066D57EC097" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_34659FBE94F6F73F0E49B066D57EC097" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_34659FBE94F6F73F0E49B066D57EC097" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_D0E99B160F381AB710DCB077FA668D19_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_D0E99B160F381AB710DCB077FA668D19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock issued for cash</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_D0E99B160F381AB710DCB077FA668D19_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_D0E99B160F381AB710DCB077FA668D19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, New Issues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_D0E99B160F381AB710DCB077FA668D19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_D0E99B160F381AB710DCB077FA668D19" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_D0E99B160F381AB710DCB077FA668D19" xlink:type="arc" />
    <link:label id="lab_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC_terseLabel_en-US" xlink:label="lab_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock issued for employee stock purchase plan, stock options and restricted stock units exercised</link:label>
    <link:label id="lab_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC_label_en-US" xlink:label="lab_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Employee Stock Purchase Plan, Stock Options And Restricted Stock Units</link:label>
    <link:label id="lab_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC_documentation_en-US" xlink:label="lab_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Employee Stock Purchase Plan, Stock Options And Other</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits" xlink:label="loc_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC" xlink:to="lab_ktos_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlanStockOptionsAndRestrictedStockUnits_160EDFC8C2FA6E28D143B066D57E7AFC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_B2EC54A537B21A8352ABB066D57EFEDE_periodEndLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_B2EC54A537B21A8352ABB066D57EFEDE" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Shares outstanding at end of the period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_B2EC54A537B21A8352ABB066D57EFEDE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_B2EC54A537B21A8352ABB066D57EFEDE" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_B2EC54A537B21A8352ABB066D57EFEDE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_16DD149C3C43B0B3D2373ACD92315EB3_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_16DD149C3C43B0B3D2373ACD92315EB3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_16DD149C3C43B0B3D2373ACD92315EB3_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_16DD149C3C43B0B3D2373ACD92315EB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_16DD149C3C43B0B3D2373ACD92315EB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_16DD149C3C43B0B3D2373ACD92315EB3" xlink:to="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_16DD149C3C43B0B3D2373ACD92315EB3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1D7B75CA9C2EA57E8C0A3ACD92317FC4_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1D7B75CA9C2EA57E8C0A3ACD92317FC4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1D7B75CA9C2EA57E8C0A3ACD92317FC4_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1D7B75CA9C2EA57E8C0A3ACD92317FC4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1D7B75CA9C2EA57E8C0A3ACD92317FC4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1D7B75CA9C2EA57E8C0A3ACD92317FC4" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1D7B75CA9C2EA57E8C0A3ACD92317FC4" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4977CF1CFC4FD96D32363ACD9232D6EF_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4977CF1CFC4FD96D32363ACD9232D6EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4977CF1CFC4FD96D32363ACD9232D6EF_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4977CF1CFC4FD96D32363ACD9232D6EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4977CF1CFC4FD96D32363ACD9232D6EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4977CF1CFC4FD96D32363ACD9232D6EF" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4977CF1CFC4FD96D32363ACD9232D6EF" xlink:type="arc" />
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_9C706A95ADB22016C8ED3ACD923261F7_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_9C706A95ADB22016C8ED3ACD923261F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer relationships</link:label>
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_9C706A95ADB22016C8ED3ACD923261F7_label_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_9C706A95ADB22016C8ED3ACD923261F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer Relationships [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_9C706A95ADB22016C8ED3ACD923261F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CustomerRelationshipsMember_9C706A95ADB22016C8ED3ACD923261F7" xlink:to="lab_us-gaap_CustomerRelationshipsMember_9C706A95ADB22016C8ED3ACD923261F7" xlink:type="arc" />
    <link:label id="lab_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A_terseLabel_en-US" xlink:label="lab_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contracts and backlog</link:label>
    <link:label id="lab_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A_label_en-US" xlink:label="lab_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contracts and Backlog [Member]</link:label>
    <link:label id="lab_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A_documentation_en-US" xlink:label="lab_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contracts and Backlog [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ContractsAndBacklogMember" xlink:label="loc_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A" xlink:to="lab_ktos_ContractsAndBacklogMember_D9ACACB3C5ED4FF5763C3ACD9232616A" xlink:type="arc" />
    <link:label id="lab_us-gaap_DevelopedTechnologyRightsMember_110BBFF6D4DBC9F74AB43ACD9232960E_terseLabel_en-US" xlink:label="lab_us-gaap_DevelopedTechnologyRightsMember_110BBFF6D4DBC9F74AB43ACD9232960E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Developed technology and technical know-how</link:label>
    <link:label id="lab_us-gaap_DevelopedTechnologyRightsMember_110BBFF6D4DBC9F74AB43ACD9232960E_label_en-US" xlink:label="lab_us-gaap_DevelopedTechnologyRightsMember_110BBFF6D4DBC9F74AB43ACD9232960E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Developed Technology Rights [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DevelopedTechnologyRightsMember" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_110BBFF6D4DBC9F74AB43ACD9232960E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DevelopedTechnologyRightsMember_110BBFF6D4DBC9F74AB43ACD9232960E" xlink:to="lab_us-gaap_DevelopedTechnologyRightsMember_110BBFF6D4DBC9F74AB43ACD9232960E" xlink:type="arc" />
    <link:label id="lab_us-gaap_TradeNamesMember_96D89F9126ADDD66FCD13ACD92323457_terseLabel_en-US" xlink:label="lab_us-gaap_TradeNamesMember_96D89F9126ADDD66FCD13ACD92323457" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade names</link:label>
    <link:label id="lab_us-gaap_TradeNamesMember_96D89F9126ADDD66FCD13ACD92323457_label_en-US" xlink:label="lab_us-gaap_TradeNamesMember_96D89F9126ADDD66FCD13ACD92323457" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade Names [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TradeNamesMember" xlink:label="loc_us-gaap_TradeNamesMember_96D89F9126ADDD66FCD13ACD92323457" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TradeNamesMember_96D89F9126ADDD66FCD13ACD92323457" xlink:to="lab_us-gaap_TradeNamesMember_96D89F9126ADDD66FCD13ACD92323457" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_DF63B9DBC77E9CFEE9E73ACD92322AAC_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_DF63B9DBC77E9CFEE9E73ACD92322AAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets by Major Class [Axis]</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_DF63B9DBC77E9CFEE9E73ACD92322AAC_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_DF63B9DBC77E9CFEE9E73ACD92322AAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_DF63B9DBC77E9CFEE9E73ACD92322AAC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_DF63B9DBC77E9CFEE9E73ACD92322AAC" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_DF63B9DBC77E9CFEE9E73ACD92322AAC" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_A6DE09F0F3C485890CA83ACD9232DFA4_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_A6DE09F0F3C485890CA83ACD9232DFA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_A6DE09F0F3C485890CA83ACD9232DFA4_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_A6DE09F0F3C485890CA83ACD9232DFA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indefinite-lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_A6DE09F0F3C485890CA83ACD9232DFA4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_A6DE09F0F3C485890CA83ACD9232DFA4" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_A6DE09F0F3C485890CA83ACD9232DFA4" xlink:type="arc" />
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0CF69A794299AD9B73E53ACD9232398D_terseLabel_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0CF69A794299AD9B73E53ACD9232398D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquired Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0CF69A794299AD9B73E53ACD9232398D_label_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0CF69A794299AD9B73E53ACD9232398D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0CF69A794299AD9B73E53ACD9232398D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0CF69A794299AD9B73E53ACD9232398D" xlink:to="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0CF69A794299AD9B73E53ACD9232398D" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_E6E3FEFE62C92C9D7C733ACD9232EDC3_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_E6E3FEFE62C92C9D7C733ACD9232EDC3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquired finite-lived intangible assets:</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_E6E3FEFE62C92C9D7C733ACD9232EDC3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_E6E3FEFE62C92C9D7C733ACD9232EDC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_E6E3FEFE62C92C9D7C733ACD9232EDC3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_E6E3FEFE62C92C9D7C733ACD9232EDC3" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_E6E3FEFE62C92C9D7C733ACD9232EDC3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_3484851BD2D81C429C7B3ACD9232A906_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_3484851BD2D81C429C7B3ACD9232A906" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross Value</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_3484851BD2D81C429C7B3ACD9232A906_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_3484851BD2D81C429C7B3ACD9232A906" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_3484851BD2D81C429C7B3ACD9232A906" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsGross_3484851BD2D81C429C7B3ACD9232A906" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsGross_3484851BD2D81C429C7B3ACD9232A906" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_071326BA76C1373CDA613ACD9233FCDF_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_071326BA76C1373CDA613ACD9233FCDF" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_071326BA76C1373CDA613ACD9233FCDF_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_071326BA76C1373CDA613ACD9233FCDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_071326BA76C1373CDA613ACD9233FCDF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_071326BA76C1373CDA613ACD9233FCDF" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_071326BA76C1373CDA613ACD9233FCDF" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_5EC6B90B3687E96F0E223ACD92335532_totalLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_5EC6B90B3687E96F0E223ACD92335532" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net Value</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_5EC6B90B3687E96F0E223ACD92335532_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_5EC6B90B3687E96F0E223ACD92335532" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_5EC6B90B3687E96F0E223ACD92335532" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_5EC6B90B3687E96F0E223ACD92335532" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_5EC6B90B3687E96F0E223ACD92335532" xlink:type="arc" />
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_E5C299EFE5AF68AC29373ACD92338EF8_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_E5C299EFE5AF68AC29373ACD92338EF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indefinite-lived trade names</link:label>
    <link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_E5C299EFE5AF68AC29373ACD92338EF8_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_E5C299EFE5AF68AC29373ACD92338EF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indefinite-Lived Intangible Assets (Excluding Goodwill)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_E5C299EFE5AF68AC29373ACD92338EF8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_E5C299EFE5AF68AC29373ACD92338EF8" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_E5C299EFE5AF68AC29373ACD92338EF8" xlink:type="arc" />
    <link:label id="lab_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183_terseLabel_en-US" xlink:label="lab_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total intangible assets: Gross Value</link:label>
    <link:label id="lab_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183_label_en-US" xlink:label="lab_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets (Excluding Goodwill), Gross</link:label>
    <link:label id="lab_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183_documentation_en-US" xlink:label="lab_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intangible Assets (Excluding Goodwill), Gross</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_IntangibleAssetsExcludingGoodwillGross" xlink:label="loc_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183" xlink:to="lab_ktos_IntangibleAssetsExcludingGoodwillGross_400B451F76FDE3505DA03ACD92336183" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_42F85AF10C67357DC1AA3ACD92330199_totalLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_42F85AF10C67357DC1AA3ACD92330199" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total intangible assets: Net Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_42F85AF10C67357DC1AA3ACD92330199" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_42F85AF10C67357DC1AA3ACD92330199" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_42F85AF10C67357DC1AA3ACD92330199" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_7C6A3D9F2A5ABF67A5F53ACD92336E83_verboseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_7C6A3D9F2A5ABF67A5F53ACD92336E83" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Aggregate amortization expense for finite-lived intangible assets</link:label>
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_7C6A3D9F2A5ABF67A5F53ACD92336E83_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_7C6A3D9F2A5ABF67A5F53ACD92336E83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Intangible Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_7C6A3D9F2A5ABF67A5F53ACD92336E83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_7C6A3D9F2A5ABF67A5F53ACD92336E83" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_7C6A3D9F2A5ABF67A5F53ACD92336E83" xlink:type="arc" />
    <link:label id="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C_terseLabel_en-US" xlink:label="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal annual utilization of NOL carryforwards limit, next five years</link:label>
    <link:label id="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C_label_en-US" xlink:label="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards, Federal Annual Utilization Limit, Five Years Succeeding Initial Ownership Change</link:label>
    <link:label id="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C_documentation_en-US" xlink:label="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards, Federal Annual Utilization Limit, Five Years Succeeding Initial Ownership Change</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange" xlink:label="loc_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C" xlink:to="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitFiveYearsSucceedingInitialOwnershipChange_C63239ACC376B364849DB09ECAB26C7C" xlink:type="arc" />
    <link:label id="lab_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9_terseLabel_en-US" xlink:label="lab_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Threshold period for change in allowed annual amount of NOL to be recognized</link:label>
    <link:label id="lab_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9_label_en-US" xlink:label="lab_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Threshold Period for Change in Allowed Annual Amount of Operating Loss Carryforward to be Recognized</link:label>
    <link:label id="lab_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9_documentation_en-US" xlink:label="lab_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Threshold Period for Change in Allowed Annual Amount of Operating Loss Carryforward to be Recognized</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized" xlink:label="loc_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9" xlink:to="lab_ktos_ThresholdPeriodForChangeInAllowedAnnualAmountOfOperatingLossCarryforwardToBeRecognized_468A3CF35DAB3F6E0A91B09ECAB2CCA9" xlink:type="arc" />
    <link:label id="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9_terseLabel_en-US" xlink:label="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Federal annual utilization of NOL carryforwards limit, after year five</link:label>
    <link:label id="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9_label_en-US" xlink:label="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards, Federal Annual Utilization Limit, After Year Five</link:label>
    <link:label id="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9_documentation_en-US" xlink:label="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards, Federal Annual Utilization Limit, After Year Five</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive" xlink:label="loc_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9" xlink:to="lab_ktos_OperatingLossCarryforwardsFederalAnnualUtilizationLimitAfterYearFive_023F3894D083CC5C825EB09ECAB299D9" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_DB87E3D3B7655C36C9BFB09ECAB2EE76_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_DB87E3D3B7655C36C9BFB09ECAB2EE76" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits that if recognized would impact the effective tax rate for continuing operations</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_DB87E3D3B7655C36C9BFB09ECAB2EE76_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_DB87E3D3B7655C36C9BFB09ECAB2EE76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits that Would Impact Effective Tax Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_DB87E3D3B7655C36C9BFB09ECAB2EE76" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_DB87E3D3B7655C36C9BFB09ECAB2EE76" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_DB87E3D3B7655C36C9BFB09ECAB2EE76" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_4427FAD2B27F73F3D1AFB09ECAB2595C_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_4427FAD2B27F73F3D1AFB09ECAB2595C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expense for interest and penalties</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_4427FAD2B27F73F3D1AFB09ECAB2595C_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_4427FAD2B27F73F3D1AFB09ECAB2595C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_4427FAD2B27F73F3D1AFB09ECAB2595C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_4427FAD2B27F73F3D1AFB09ECAB2595C" xlink:to="lab_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_4427FAD2B27F73F3D1AFB09ECAB2595C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_D2A268A173FA59FBDBD0B09ECAB277D7_terseLabel_en-US" xlink:label="lab_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_D2A268A173FA59FBDBD0B09ECAB277D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities for uncertain tax positions believed to be reasonably possible to expire within twelve months</link:label>
    <link:label id="lab_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_D2A268A173FA59FBDBD0B09ECAB277D7_label_en-US" xlink:label="lab_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_D2A268A173FA59FBDBD0B09ECAB277D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease in Unrecognized Tax Benefits is Reasonably Possible</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible" xlink:label="loc_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_D2A268A173FA59FBDBD0B09ECAB277D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_D2A268A173FA59FBDBD0B09ECAB277D7" xlink:to="lab_us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_D2A268A173FA59FBDBD0B09ECAB277D7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_919C9E522DCBA0F4774082E5D7736A32_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_919C9E522DCBA0F4774082E5D7736A32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying Amounts and Estimated Fair Value of Long-Term Debt</link:label>
    <link:label id="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_919C9E522DCBA0F4774082E5D7736A32_label_en-US" xlink:label="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_919C9E522DCBA0F4774082E5D7736A32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_919C9E522DCBA0F4774082E5D7736A32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_919C9E522DCBA0F4774082E5D7736A32" xlink:to="lab_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_919C9E522DCBA0F4774082E5D7736A32" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_4808D55B127094FFA46B313699315D80_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_19823173951C5C94B413283217FA8207" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_4808D55B127094FFA46B313699315D80_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_19823173951C5C94B413283217FA8207" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_19823173951C5C94B413283217FA8207" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_19823173951C5C94B413283217FA8207" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_19823173951C5C94B413283217FA8207" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_62EBA2B1F7BD869A83B8B09ECA2AABF2_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_62EBA2B1F7BD869A83B8B09ECA2AABF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by (used in) operating activities from continuing operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_62EBA2B1F7BD869A83B8B09ECA2AABF2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_62EBA2B1F7BD869A83B8B09ECA2AABF2" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_62EBA2B1F7BD869A83B8B09ECA2AABF2" xlink:type="arc" />
    <link:label id="lab_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836_negatedTerseLabel_en-US" xlink:label="lab_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Investment in affiliated companies</link:label>
    <link:label id="lab_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836_label_en-US" xlink:label="lab_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments For (Proceeds From) Investment In Affiliated Companies</link:label>
    <link:label id="lab_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836_documentation_en-US" xlink:label="lab_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments For (Proceeds From) Investment In Affiliated Companies</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies" xlink:label="loc_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836" xlink:to="lab_ktos_PaymentsForProceedsFromInvestmentInAffiliatedCompanies_4302679E613E924024D9B09ECA2A1836" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromContributionsFromAffiliates_8F5E652FBB64364B1323B09ECA2BB305_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromContributionsFromAffiliates_8F5E652FBB64364B1323B09ECA2BB305" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing from affiliated companies</link:label>
    <link:label id="lab_us-gaap_ProceedsFromContributionsFromAffiliates_8F5E652FBB64364B1323B09ECA2BB305_label_en-US" xlink:label="lab_us-gaap_ProceedsFromContributionsFromAffiliates_8F5E652FBB64364B1323B09ECA2BB305" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Contributions from Affiliates</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromContributionsFromAffiliates" xlink:label="loc_us-gaap_ProceedsFromContributionsFromAffiliates_8F5E652FBB64364B1323B09ECA2BB305" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromContributionsFromAffiliates_8F5E652FBB64364B1323B09ECA2BB305" xlink:to="lab_us-gaap_ProceedsFromContributionsFromAffiliates_8F5E652FBB64364B1323B09ECA2BB305" xlink:type="arc" />
    <link:label id="lab_us-gaap_CondensedFinancialStatementsTextBlock_742FA8D4000F7ADEB65D313699267816_terseLabel_en-US" xlink:label="lab_us-gaap_CondensedFinancialStatementsTextBlock_11FB9E7A22575747860E10D5FD7F2806" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Consolidating Financial Statements</link:label>
    <link:label id="lab_us-gaap_CondensedFinancialStatementsTextBlock_742FA8D4000F7ADEB65D313699267816_label_en-US" xlink:label="lab_us-gaap_CondensedFinancialStatementsTextBlock_11FB9E7A22575747860E10D5FD7F2806" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Condensed Financial Statements [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CondensedFinancialStatementsTextBlock" xlink:label="loc_us-gaap_CondensedFinancialStatementsTextBlock_11FB9E7A22575747860E10D5FD7F2806" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CondensedFinancialStatementsTextBlock_11FB9E7A22575747860E10D5FD7F2806" xlink:to="lab_us-gaap_CondensedFinancialStatementsTextBlock_11FB9E7A22575747860E10D5FD7F2806" xlink:type="arc" />
    <link:label id="lab_ktos_DocumentAndEntityInformation_17F418DD30281E7EF33072641C0C0AF7_label_en-US" xlink:label="lab_ktos_DocumentAndEntityInformation_9A47038399B15E9EB1BE688F55A244AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document And Entity Information</link:label>
    <link:label id="lab_ktos_DocumentAndEntityInformation_17F418DD30281E7EF33072641C0C0AF7_documentation_en-US" xlink:label="lab_ktos_DocumentAndEntityInformation_9A47038399B15E9EB1BE688F55A244AE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DocumentAndEntityInformation" xlink:label="loc_ktos_DocumentAndEntityInformation_9A47038399B15E9EB1BE688F55A244AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DocumentAndEntityInformation_9A47038399B15E9EB1BE688F55A244AE" xlink:to="lab_ktos_DocumentAndEntityInformation_9A47038399B15E9EB1BE688F55A244AE" xlink:type="arc" />
    <link:label id="lab_dei_EntityRegistrantName_DAC5330614416C131A6372641C0D7909_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_CF6E6A68DF695A019EF95C136E6A7D06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:label id="lab_dei_EntityRegistrantName_DAC5330614416C131A6372641C0D7909_label_en-US" xlink:label="lab_dei_EntityRegistrantName_CF6E6A68DF695A019EF95C136E6A7D06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_CF6E6A68DF695A019EF95C136E6A7D06" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_CF6E6A68DF695A019EF95C136E6A7D06" xlink:to="lab_dei_EntityRegistrantName_CF6E6A68DF695A019EF95C136E6A7D06" xlink:type="arc" />
    <link:label id="lab_dei_EntityCentralIndexKey_277DDC1F8A134D74D22572641C0D6B03_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey_447FFCF67EFB55E18F8415D40B2987AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:label id="lab_dei_EntityCentralIndexKey_277DDC1F8A134D74D22572641C0D6B03_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_447FFCF67EFB55E18F8415D40B2987AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_447FFCF67EFB55E18F8415D40B2987AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey_447FFCF67EFB55E18F8415D40B2987AB" xlink:to="lab_dei_EntityCentralIndexKey_447FFCF67EFB55E18F8415D40B2987AB" xlink:type="arc" />
    <link:label id="lab_dei_CurrentFiscalYearEndDate_9BC641F33C86D73058B672641C0D8966_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_AD5D1C94D4A65E61BC8C598A6EDC34BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_9BC641F33C86D73058B672641C0D8966_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_AD5D1C94D4A65E61BC8C598A6EDC34BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_AD5D1C94D4A65E61BC8C598A6EDC34BE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_AD5D1C94D4A65E61BC8C598A6EDC34BE" xlink:to="lab_dei_CurrentFiscalYearEndDate_AD5D1C94D4A65E61BC8C598A6EDC34BE" xlink:type="arc" />
    <link:label id="lab_dei_EntityFilerCategory_EB9182CA19E4D3A6E30E72641C0DF052_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_2484064130615415A2FB575B23DD30FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:label id="lab_dei_EntityFilerCategory_EB9182CA19E4D3A6E30E72641C0DF052_label_en-US" xlink:label="lab_dei_EntityFilerCategory_2484064130615415A2FB575B23DD30FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_2484064130615415A2FB575B23DD30FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory_2484064130615415A2FB575B23DD30FF" xlink:to="lab_dei_EntityFilerCategory_2484064130615415A2FB575B23DD30FF" xlink:type="arc" />
    <link:label id="lab_dei_DocumentType_11253B6FC3BC30990A9872641C0DBBC6_terseLabel_en-US" xlink:label="lab_dei_DocumentType_CD52043802B75BFCA0AC421FC17677FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:label id="lab_dei_DocumentType_11253B6FC3BC30990A9872641C0DBBC6_label_en-US" xlink:label="lab_dei_DocumentType_CD52043802B75BFCA0AC421FC17677FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_CD52043802B75BFCA0AC421FC17677FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_CD52043802B75BFCA0AC421FC17677FC" xlink:to="lab_dei_DocumentType_CD52043802B75BFCA0AC421FC17677FC" xlink:type="arc" />
    <link:label id="lab_dei_DocumentPeriodEndDate_84C58998EE1C1809C3D672641C0DE6A9_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_F8EEDCCD25BF586F8EF44DB08626DEB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:label id="lab_dei_DocumentPeriodEndDate_84C58998EE1C1809C3D672641C0DE6A9_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_F8EEDCCD25BF586F8EF44DB08626DEB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_F8EEDCCD25BF586F8EF44DB08626DEB7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_F8EEDCCD25BF586F8EF44DB08626DEB7" xlink:to="lab_dei_DocumentPeriodEndDate_F8EEDCCD25BF586F8EF44DB08626DEB7" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalYearFocus_5EA5710152B5C47E05C272641C0DCB24_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_285E8856C3E85930A5329E1CAFE6197D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalYearFocus_5EA5710152B5C47E05C272641C0DCB24_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_285E8856C3E85930A5329E1CAFE6197D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_285E8856C3E85930A5329E1CAFE6197D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_285E8856C3E85930A5329E1CAFE6197D" xlink:to="lab_dei_DocumentFiscalYearFocus_285E8856C3E85930A5329E1CAFE6197D" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_9863B49A84F9E0E4ED2372641C0D7472_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_8B829B7C3481558B8A2421D571C9B674" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_9863B49A84F9E0E4ED2372641C0D7472_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_8B829B7C3481558B8A2421D571C9B674" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_8B829B7C3481558B8A2421D571C9B674" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_8B829B7C3481558B8A2421D571C9B674" xlink:to="lab_dei_DocumentFiscalPeriodFocus_8B829B7C3481558B8A2421D571C9B674" xlink:type="arc" />
    <link:label id="lab_dei_AmendmentFlag_4C6394085F531CBB5B3E72641C0D573D_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag_4CEF287D18035A73B281F64267F55E4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:label id="lab_dei_AmendmentFlag_4C6394085F531CBB5B3E72641C0D573D_label_en-US" xlink:label="lab_dei_AmendmentFlag_4CEF287D18035A73B281F64267F55E4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_4CEF287D18035A73B281F64267F55E4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_4CEF287D18035A73B281F64267F55E4E" xlink:to="lab_dei_AmendmentFlag_4CEF287D18035A73B281F64267F55E4E" xlink:type="arc" />
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_A195492B91FF2A413DCD72641C0DCAF6_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_A758B360B0015DFE9FD125494B22C21A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_A195492B91FF2A413DCD72641C0DCAF6_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_A758B360B0015DFE9FD125494B22C21A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_A758B360B0015DFE9FD125494B22C21A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding_A758B360B0015DFE9FD125494B22C21A" xlink:to="lab_dei_EntityCommonStockSharesOutstanding_A758B360B0015DFE9FD125494B22C21A" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_6B06334D3CC6F94C187F34E39CD3AB67_terseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_7A9E0BD156B3565FABB15A49695759B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt</link:label>
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_6B06334D3CC6F94C187F34E39CD3AB67_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_7A9E0BD156B3565FABB15A49695759B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_7A9E0BD156B3565FABB15A49695759B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock_7A9E0BD156B3565FABB15A49695759B3" xlink:to="lab_us-gaap_DebtDisclosureTextBlock_7A9E0BD156B3565FABB15A49695759B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_AC09A50EDB98A7D8E08AB09ECAD48BBB_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_AC09A50EDB98A7D8E08AB09ECAD48BBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_AC09A50EDB98A7D8E08AB09ECAD48BBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_AC09A50EDB98A7D8E08AB09ECAD48BBB" xlink:to="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_AC09A50EDB98A7D8E08AB09ECAD48BBB" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquity_D707433183FB9F35B635B09ECAD42D99_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_D707433183FB9F35B635B09ECAD42D99" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Stockholders&#8217; equity at beginning of period</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_D707433183FB9F35B635B09ECAD42D99_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_D707433183FB9F35B635B09ECAD42D99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_D707433183FB9F35B635B09ECAD42D99" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_D707433183FB9F35B635B09ECAD42D99" xlink:to="lab_us-gaap_StockholdersEquity_D707433183FB9F35B635B09ECAD42D99" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_16369EE08D801FFAB9AAB09ECAD4D0EB_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_16369EE08D801FFAB9AAB09ECAD4D0EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Comprehensive loss:</link:label>
    <link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_16369EE08D801FFAB9AAB09ECAD4D0EB_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_16369EE08D801FFAB9AAB09ECAD4D0EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAbstract" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_16369EE08D801FFAB9AAB09ECAD4D0EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_16369EE08D801FFAB9AAB09ECAD4D0EB" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_16369EE08D801FFAB9AAB09ECAD4D0EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_A6274ACF47E9DE432B77B09ECAD47750_verboseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_A6274ACF47E9DE432B77B09ECAD47750" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_A6274ACF47E9DE432B77B09ECAD47750" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_A6274ACF47E9DE432B77B09ECAD47750" xlink:to="lab_us-gaap_NetIncomeLoss_A6274ACF47E9DE432B77B09ECAD47750" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_7EB08E8F122E71AC9CBAB09ECAD402E2_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_7EB08E8F122E71AC9CBAB09ECAD402E2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Change in cumulative translation adjustment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_7EB08E8F122E71AC9CBAB09ECAD402E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_7EB08E8F122E71AC9CBAB09ECAD402E2" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_7EB08E8F122E71AC9CBAB09ECAD402E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_77E075B79A25C2A79A5EB09ECAD473BF_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_77E075B79A25C2A79A5EB09ECAD473BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_77E075B79A25C2A79A5EB09ECAD473BF_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_77E075B79A25C2A79A5EB09ECAD473BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_77E075B79A25C2A79A5EB09ECAD473BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_77E075B79A25C2A79A5EB09ECAD473BF" xlink:to="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_77E075B79A25C2A79A5EB09ECAD473BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_7A4B0EA031C66ED5F899B09ECAD516A2_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_7A4B0EA031C66ED5F899B09ECAD516A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of common stock for cash</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_7A4B0EA031C66ED5F899B09ECAD516A2_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_7A4B0EA031C66ED5F899B09ECAD516A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, New Issues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_7A4B0EA031C66ED5F899B09ECAD516A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_7A4B0EA031C66ED5F899B09ECAD516A2" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_7A4B0EA031C66ED5F899B09ECAD516A2" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_000D07091930E462A4F7B09ECAD5294D_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_000D07091930E462A4F7B09ECAD5294D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of common stock for employee stock purchase plan</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_000D07091930E462A4F7B09ECAD5294D_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_000D07091930E462A4F7B09ECAD5294D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Employee Stock Purchase Plan</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_000D07091930E462A4F7B09ECAD5294D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_000D07091930E462A4F7B09ECAD5294D" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_000D07091930E462A4F7B09ECAD5294D" xlink:type="arc" />
    <link:label id="lab_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9_negatedTerseLabel_en-US" xlink:label="lab_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Restricted stock units exchanged for taxes</link:label>
    <link:label id="lab_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9_label_en-US" xlink:label="lab_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock Units Traded for Taxes, Value</link:label>
    <link:label id="lab_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9_documentation_en-US" xlink:label="lab_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted Stock Units Traded for Taxes, Value</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_RestrictedStockUnitsTradedForTaxesValue" xlink:label="loc_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9" xlink:to="lab_ktos_RestrictedStockUnitsTradedForTaxesValue_239FF5B33B99E1FDE15FB09ECAD592E9" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquity_59F0BE606560485E1D14B09ECAD55293_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_59F0BE606560485E1D14B09ECAD55293" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Stockholders&#8217; equity at end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_59F0BE606560485E1D14B09ECAD55293" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_59F0BE606560485E1D14B09ECAD55293" xlink:to="lab_us-gaap_StockholdersEquity_59F0BE606560485E1D14B09ECAD55293" xlink:type="arc" />
    <link:label id="lab_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32_terseLabel_en-US" xlink:label="lab_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">10% Senior Notes due in 2017</link:label>
    <link:label id="lab_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32_label_en-US" xlink:label="lab_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ten Percent Senior Notes Due June 2017 [Member]</link:label>
    <link:label id="lab_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32_documentation_en-US" xlink:label="lab_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior Notes Due June 2017 [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_TenPercentSeniorNotesDueJune2017Member" xlink:label="loc_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32" xlink:to="lab_ktos_TenPercentSeniorNotesDueJune2017Member_CFEB61E912B1C7B3DE06CB5AD2249D32" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_DC290202220F6FA0A2C4CB5AD224DC8C_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_DC290202220F6FA0A2C4CB5AD224DC8C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit facility</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_DC290202220F6FA0A2C4CB5AD224DC8C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_DC290202220F6FA0A2C4CB5AD224DC8C" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_DC290202220F6FA0A2C4CB5AD224DC8C" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_E14539EFB7DAD606AA63CB5AD224CA9B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_E14539EFB7DAD606AA63CB5AD224CA9B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption Date [Axis]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_E14539EFB7DAD606AA63CB5AD224CA9B_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_E14539EFB7DAD606AA63CB5AD224CA9B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Redemption, Period [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_E14539EFB7DAD606AA63CB5AD224CA9B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_E14539EFB7DAD606AA63CB5AD224CA9B" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_E14539EFB7DAD606AA63CB5AD224CA9B" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4BD851A836300F65E7C6CB5AD22425AE_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4BD851A836300F65E7C6CB5AD22425AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption Date [Domain]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4BD851A836300F65E7C6CB5AD22425AE_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4BD851A836300F65E7C6CB5AD22425AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Redemption, Period [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4BD851A836300F65E7C6CB5AD22425AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4BD851A836300F65E7C6CB5AD22425AE" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4BD851A836300F65E7C6CB5AD22425AE" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Between 5/15/2016 and 5/15/2017</link:label>
    <link:label id="lab_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C_label_en-US" xlink:label="lab_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemption Period Two [Member]</link:label>
    <link:label id="lab_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">June First Twenty Fourteen Through June First Twenty Fifteen [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_RedemptionPeriodTwoMember" xlink:label="loc_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C" xlink:to="lab_ktos_RedemptionPeriodTwoMember_0489FC83E71E1700FC8FCB5AD224470C" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Between 5/15/2017 and 5/15/2018</link:label>
    <link:label id="lab_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E_label_en-US" xlink:label="lab_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemption Period Three [Member]</link:label>
    <link:label id="lab_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">June First Twenty Fifteen Through June First Twenty Sixteen [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_RedemptionPeriodThreeMember" xlink:label="loc_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E" xlink:to="lab_ktos_RedemptionPeriodThreeMember_54746200331BF3D754B0CB5AD224808E" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After 5/15/2018</link:label>
    <link:label id="lab_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461_label_en-US" xlink:label="lab_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemption Period Four [Member]</link:label>
    <link:label id="lab_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">After June First Twenty Sixteen [Member]</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_RedemptionPeriodFourMember" xlink:label="loc_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461" xlink:to="lab_ktos_RedemptionPeriodFourMember_9DCC373FA40453EDD567CB5AD224B461" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5A353EDAD4922AD44D48CB5AD225D216_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5A353EDAD4922AD44D48CB5AD225D216" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stated interest rate (percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5A353EDAD4922AD44D48CB5AD225D216_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5A353EDAD4922AD44D48CB5AD225D216" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_5A353EDAD4922AD44D48CB5AD225D216" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_5A353EDAD4922AD44D48CB5AD225D216" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_5A353EDAD4922AD44D48CB5AD225D216" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_38183FBAFA39F70DFB6BCB5AD225DA50_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_38183FBAFA39F70DFB6BCB5AD225DA50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from the issuance of long-term debt</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_38183FBAFA39F70DFB6BCB5AD225DA50_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_38183FBAFA39F70DFB6BCB5AD225DA50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_38183FBAFA39F70DFB6BCB5AD225DA50" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_38183FBAFA39F70DFB6BCB5AD225DA50" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_38183FBAFA39F70DFB6BCB5AD225DA50" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_6B8C6CBC7555505D816FCB5AD22549F0_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_6B8C6CBC7555505D816FCB5AD22549F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Original issue discount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_6B8C6CBC7555505D816FCB5AD22549F0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscount_6B8C6CBC7555505D816FCB5AD22549F0" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedDiscount_6B8C6CBC7555505D816FCB5AD22549F0" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtIssuanceCosts_18831AC0CC3F4A84065CCB5AD2257736_terseLabel_en-US" xlink:label="lab_us-gaap_DebtIssuanceCosts_18831AC0CC3F4A84065CCB5AD2257736" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt issuance cost</link:label>
    <link:label id="lab_us-gaap_DebtIssuanceCosts_18831AC0CC3F4A84065CCB5AD2257736_label_en-US" xlink:label="lab_us-gaap_DebtIssuanceCosts_18831AC0CC3F4A84065CCB5AD2257736" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Issuance Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtIssuanceCosts" xlink:label="loc_us-gaap_DebtIssuanceCosts_18831AC0CC3F4A84065CCB5AD2257736" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtIssuanceCosts_18831AC0CC3F4A84065CCB5AD2257736" xlink:to="lab_us-gaap_DebtIssuanceCosts_18831AC0CC3F4A84065CCB5AD2257736" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromLinesOfCredit_F3F4B6C5058ABDA591E9CB5AD225B838_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLinesOfCredit_F3F4B6C5058ABDA591E9CB5AD225B838" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit agreement borrowings</link:label>
    <link:label id="lab_us-gaap_ProceedsFromLinesOfCredit_F3F4B6C5058ABDA591E9CB5AD225B838_label_en-US" xlink:label="lab_us-gaap_ProceedsFromLinesOfCredit_F3F4B6C5058ABDA591E9CB5AD225B838" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Lines of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_F3F4B6C5058ABDA591E9CB5AD225B838" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromLinesOfCredit_F3F4B6C5058ABDA591E9CB5AD225B838" xlink:to="lab_us-gaap_ProceedsFromLinesOfCredit_F3F4B6C5058ABDA591E9CB5AD225B838" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentRepurchaseAmount_325110031204DCB7F20ECB5AD225DDE8_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRepurchaseAmount_325110031204DCB7F20ECB5AD225DDE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reacquisition price</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentRepurchaseAmount_325110031204DCB7F20ECB5AD225DDE8_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRepurchaseAmount_325110031204DCB7F20ECB5AD225DDE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Repurchase Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentRepurchaseAmount" xlink:label="loc_us-gaap_DebtInstrumentRepurchaseAmount_325110031204DCB7F20ECB5AD225DDE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRepurchaseAmount_325110031204DCB7F20ECB5AD225DDE8" xlink:to="lab_us-gaap_DebtInstrumentRepurchaseAmount_325110031204DCB7F20ECB5AD225DDE8" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfDebt_2B3811B8860CCF858067CB5AD22527CB_terseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt_2B3811B8860CCF858067CB5AD22527CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Repayment of outstanding borrowings</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfDebt_2B3811B8860CCF858067CB5AD22527CB_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt_2B3811B8860CCF858067CB5AD22527CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:label="loc_us-gaap_RepaymentsOfDebt_2B3811B8860CCF858067CB5AD22527CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfDebt_2B3811B8860CCF858067CB5AD22527CB" xlink:to="lab_us-gaap_RepaymentsOfDebt_2B3811B8860CCF858067CB5AD22527CB" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4_terseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Early termination fee</link:label>
    <link:label id="lab_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4_label_en-US" xlink:label="lab_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Early Termination Fee</link:label>
    <link:label id="lab_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Early Termination Fee</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentEarlyTerminationFee" xlink:label="loc_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4" xlink:to="lab_ktos_DebtInstrumentEarlyTerminationFee_8BBE098592231B2885A1CB5AD22599E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_129DE54B3632D52E4840CB5AD225E545_terseLabel_en-US" xlink:label="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_129DE54B3632D52E4840CB5AD225E545" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Write off of unamortized issue costs</link:label>
    <link:label id="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_129DE54B3632D52E4840CB5AD225E545_label_en-US" xlink:label="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_129DE54B3632D52E4840CB5AD225E545" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Write off of Deferred Debt Issuance Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_129DE54B3632D52E4840CB5AD225E545" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_129DE54B3632D52E4840CB5AD225E545" xlink:to="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_129DE54B3632D52E4840CB5AD225E545" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedPremium_5424C17896E28C1047E7CB5AD225516F_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_5424C17896E28C1047E7CB5AD225516F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unamortized premium</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedPremium_5424C17896E28C1047E7CB5AD225516F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_5424C17896E28C1047E7CB5AD225516F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unamortized Premium</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DebtInstrumentUnamortizedPremium" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedPremium_5424C17896E28C1047E7CB5AD225516F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedPremium_5424C17896E28C1047E7CB5AD225516F" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedPremium_5424C17896E28C1047E7CB5AD225516F" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767_terseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest accrued in escrow</link:label>
    <link:label id="lab_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767_label_en-US" xlink:label="lab_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Escrow Interest Accrued</link:label>
    <link:label id="lab_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Escrow Interest</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentEscrowInterestAccrued" xlink:label="loc_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767" xlink:to="lab_ktos_DebtInstrumentEscrowInterestAccrued_B039A8875536806C14DBCB5AD2259767" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA_terseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption amount as percentage of aggregate principal amount</link:label>
    <link:label id="lab_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA_label_en-US" xlink:label="lab_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Redemption Amount As Percentage of Aggregate Principal Amount</link:label>
    <link:label id="lab_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percent of aggregate principal amount that may be redeemed by the Company if certain terms are met</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount" xlink:label="loc_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA" xlink:to="lab_ktos_DebtInstrumentRedemptionAmountAsPercentageOfAggregatePrincipalAmount_4D4A8AA4915B41C7D95ECB5AD225FEAA" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2_terseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period following asset disposition</link:label>
    <link:label id="lab_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2_label_en-US" xlink:label="lab_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Duration Following Sale Required to Repurchase Loan With Unused Proceeds</link:label>
    <link:label id="lab_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Duration Following Sale Required to Repurchase Loan With Unused Proceeds</link:label>
    <link:loc xlink:href="ktos-20170326.xsd#ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds" xlink:label="loc_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2" xlink:to="lab_ktos_DebtInstrumentDurationFollowingSaleRequiredtoRepurchaseLoanWithUnusedProceeds_8DFCF07A4C43D366844ACB5AD22502F2" xlink:type="arc" />
    <link:label id="lab_us-gaap_LegalFees_409B0C76615543B5F19BCB5AD226B97A_terseLabel_en-US" xlink:label="lab_us-gaap_LegalFees_409B0C76615543B5F19BCB5AD226B97A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal fees</link:label>
    <link:label id="lab_us-gaap_LegalFees_409B0C76615543B5F19BCB5AD226B97A_label_en-US" xlink:label="lab_us-gaap_LegalFees_409B0C76615543B5F19BCB5AD226B97A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Fees</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LegalFees" xlink:label="loc_us-gaap_LegalFees_409B0C76615543B5F19BCB5AD226B97A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LegalFees_409B0C76615543B5F19BCB5AD226B97A" xlink:to="lab_us-gaap_LegalFees_409B0C76615543B5F19BCB5AD226B97A" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_18E165D26ABA6610018CCB5AD2261439_verboseLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_18E165D26ABA6610018CCB5AD2261439" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gain (loss) on extinguishment of debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_18E165D26ABA6610018CCB5AD2261439" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_18E165D26ABA6610018CCB5AD2261439" xlink:to="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_18E165D26ABA6610018CCB5AD2261439" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_8AF38B5826140B0C7ED5CB5AD2260C51_terseLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_8AF38B5826140B0C7ED5CB5AD2260C51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain (loss) on extinguishment of debt, gross</link:label>
    <link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_8AF38B5826140B0C7ED5CB5AD2260C51_label_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_8AF38B5826140B0C7ED5CB5AD2260C51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (Losses) on Extinguishment of Debt, before Write off of Deferred Debt Issuance Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_8AF38B5826140B0C7ED5CB5AD2260C51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_8AF38B5826140B0C7ED5CB5AD2260C51" xlink:to="lab_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_8AF38B5826140B0C7ED5CB5AD2260C51" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeniorNotes_B3A4879EB4F2E17E6F6ACB5AD2263BCD_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotes_B3A4879EB4F2E17E6F6ACB5AD2263BCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes outstanding</link:label>
    <link:label id="lab_us-gaap_SeniorNotes_B3A4879EB4F2E17E6F6ACB5AD2263BCD_label_en-US" xlink:label="lab_us-gaap_SeniorNotes_B3A4879EB4F2E17E6F6ACB5AD2263BCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SeniorNotes" xlink:label="loc_us-gaap_SeniorNotes_B3A4879EB4F2E17E6F6ACB5AD2263BCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorNotes_B3A4879EB4F2E17E6F6ACB5AD2263BCD" xlink:to="lab_us-gaap_SeniorNotes_B3A4879EB4F2E17E6F6ACB5AD2263BCD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_45A3746864C80FB192D282E5D7AEACC2_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_45A3746864C80FB192D282E5D7AEACC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_45A3746864C80FB192D282E5D7AEACC2_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_45A3746864C80FB192D282E5D7AEACC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_45A3746864C80FB192D282E5D7AEACC2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTextBlock_45A3746864C80FB192D282E5D7AEACC2" xlink:to="lab_us-gaap_ScheduleOfGoodwillTextBlock_45A3746864C80FB192D282E5D7AEACC2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_C0B6874D9586FE51356782E5D7AE5522_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_C0B6874D9586FE51356782E5D7AE5522" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Intangible Assets (Finite-Lived)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_C0B6874D9586FE51356782E5D7AE5522_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_C0B6874D9586FE51356782E5D7AE5522" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_C0B6874D9586FE51356782E5D7AE5522" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_C0B6874D9586FE51356782E5D7AE5522" xlink:to="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_C0B6874D9586FE51356782E5D7AE5522" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_D5F765D15925078E0AEC82E5D7AED6C7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_D5F765D15925078E0AEC82E5D7AED6C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Intangible Assets (Indefinite-Lived)</link:label>
    <link:label id="lab_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_D5F765D15925078E0AEC82E5D7AED6C7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_D5F765D15925078E0AEC82E5D7AED6C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Indefinite-Lived Intangible Assets [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_D5F765D15925078E0AEC82E5D7AED6C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_D5F765D15925078E0AEC82E5D7AED6C7" xlink:to="lab_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_D5F765D15925078E0AEC82E5D7AED6C7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_010218B17F909C1E449EB066D5D2A004_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_010218B17F909C1E449EB066D5D2A004" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_010218B17F909C1E449EB066D5D2A004_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_010218B17F909C1E449EB066D5D2A004" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_010218B17F909C1E449EB066D5D2A004" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_010218B17F909C1E449EB066D5D2A004" xlink:to="lab_us-gaap_ScheduleOfGoodwillTable_010218B17F909C1E449EB066D5D2A004" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillLineItems_508ACE3A28FBEF1DF2FCB066D5D278F9_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_508ACE3A28FBEF1DF2FCB066D5D278F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_508ACE3A28FBEF1DF2FCB066D5D278F9_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_508ACE3A28FBEF1DF2FCB066D5D278F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_508ACE3A28FBEF1DF2FCB066D5D278F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillLineItems_508ACE3A28FBEF1DF2FCB066D5D278F9" xlink:to="lab_us-gaap_GoodwillLineItems_508ACE3A28FBEF1DF2FCB066D5D278F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillGross_0532D33C261A2DF50190B066D5D270DC_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_0532D33C261A2DF50190B066D5D270DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross value</link:label>
    <link:label id="lab_us-gaap_GoodwillGross_0532D33C261A2DF50190B066D5D270DC_label_en-US" xlink:label="lab_us-gaap_GoodwillGross_0532D33C261A2DF50190B066D5D270DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_0532D33C261A2DF50190B066D5D270DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillGross_0532D33C261A2DF50190B066D5D270DC" xlink:to="lab_us-gaap_GoodwillGross_0532D33C261A2DF50190B066D5D270DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_89032408C08CD665BF90B066D5D27C67_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_89032408C08CD665BF90B066D5D27C67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less accumulated impairment</link:label>
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_89032408C08CD665BF90B066D5D27C67_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_89032408C08CD665BF90B066D5D27C67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Impaired, Accumulated Impairment Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_89032408C08CD665BF90B066D5D27C67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_89032408C08CD665BF90B066D5D27C67" xlink:to="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_89032408C08CD665BF90B066D5D27C67" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_4F980F6FCEE15EBDE192B066D5D293CE_totalLabel_en-US" xlink:label="lab_us-gaap_Goodwill_4F980F6FCEE15EBDE192B066D5D293CE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_4F980F6FCEE15EBDE192B066D5D293CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_4F980F6FCEE15EBDE192B066D5D293CE" xlink:to="lab_us-gaap_Goodwill_4F980F6FCEE15EBDE192B066D5D293CE" xlink:type="arc" />
  </link:labelLink>
</link:linkbase>
