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    <link:label id="lab_us-gaap_AssetsCurrent_1EEBA457282F084D381153C2E78A2DC9_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_1EEBA457282F084D381153C2E78A2DC9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
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    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_9E31B962A144934714A95EC1EB6865BF_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_9E31B962A144934714A95EC1EB6865BF" 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_9E31B962A144934714A95EC1EB6865BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_9E31B962A144934714A95EC1EB6865BF" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_9E31B962A144934714A95EC1EB6865BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_57FBB97DABFB9587EE7E5EC1EB681597_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_57FBB97DABFB9587EE7E5EC1EB681597" 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_57FBB97DABFB9587EE7E5EC1EB681597_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodAxis_57FBB97DABFB9587EE7E5EC1EB681597" 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_57FBB97DABFB9587EE7E5EC1EB681597" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4ED7B147CDE33E48622C5EC1EB685AA1_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4ED7B147CDE33E48622C5EC1EB685AA1" 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_4ED7B147CDE33E48622C5EC1EB685AA1_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4ED7B147CDE33E48622C5EC1EB685AA1" 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_4ED7B147CDE33E48622C5EC1EB685AA1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4ED7B147CDE33E48622C5EC1EB685AA1" xlink:to="lab_us-gaap_DebtInstrumentRedemptionPeriodDomain_4ED7B147CDE33E48622C5EC1EB685AA1" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodTwoMember_46EBEC21B0AE49F6EFC35EC1EB690163_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodTwoMember_46EBEC21B0AE49F6EFC35EC1EB690163" 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_46EBEC21B0AE49F6EFC35EC1EB690163_label_en-US" xlink:label="lab_ktos_RedemptionPeriodTwoMember_46EBEC21B0AE49F6EFC35EC1EB690163" 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_46EBEC21B0AE49F6EFC35EC1EB690163_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodTwoMember_46EBEC21B0AE49F6EFC35EC1EB690163" 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-20160327.xsd#ktos_RedemptionPeriodTwoMember" xlink:label="loc_ktos_RedemptionPeriodTwoMember_46EBEC21B0AE49F6EFC35EC1EB690163" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodTwoMember_46EBEC21B0AE49F6EFC35EC1EB690163" xlink:to="lab_ktos_RedemptionPeriodTwoMember_46EBEC21B0AE49F6EFC35EC1EB690163" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodThreeMember_0EB146F01D5731A17C655EC1EB6938D4_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodThreeMember_0EB146F01D5731A17C655EC1EB6938D4" 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_0EB146F01D5731A17C655EC1EB6938D4_label_en-US" xlink:label="lab_ktos_RedemptionPeriodThreeMember_0EB146F01D5731A17C655EC1EB6938D4" 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_0EB146F01D5731A17C655EC1EB6938D4_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodThreeMember_0EB146F01D5731A17C655EC1EB6938D4" 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-20160327.xsd#ktos_RedemptionPeriodThreeMember" xlink:label="loc_ktos_RedemptionPeriodThreeMember_0EB146F01D5731A17C655EC1EB6938D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodThreeMember_0EB146F01D5731A17C655EC1EB6938D4" xlink:to="lab_ktos_RedemptionPeriodThreeMember_0EB146F01D5731A17C655EC1EB6938D4" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodFourMember_197671A86A8E9DBBFFE35EC1EB695E16_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodFourMember_197671A86A8E9DBBFFE35EC1EB695E16" 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_197671A86A8E9DBBFFE35EC1EB695E16_label_en-US" xlink:label="lab_ktos_RedemptionPeriodFourMember_197671A86A8E9DBBFFE35EC1EB695E16" 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_197671A86A8E9DBBFFE35EC1EB695E16_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodFourMember_197671A86A8E9DBBFFE35EC1EB695E16" 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-20160327.xsd#ktos_RedemptionPeriodFourMember" xlink:label="loc_ktos_RedemptionPeriodFourMember_197671A86A8E9DBBFFE35EC1EB695E16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodFourMember_197671A86A8E9DBBFFE35EC1EB695E16" xlink:to="lab_ktos_RedemptionPeriodFourMember_197671A86A8E9DBBFFE35EC1EB695E16" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Before 5/15/2016</link:label>
    <link:label id="lab_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8_label_en-US" xlink:label="lab_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemption Period Before May 15 2016 [Member]</link:label>
    <link:label id="lab_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Redemption Period Before May 15 2016 [Member]</link:label>
    <link:loc xlink:href="ktos-20160327.xsd#ktos_RedemptionPeriodBeforeMay152016Member" xlink:label="loc_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8" xlink:to="lab_ktos_RedemptionPeriodBeforeMay152016Member_677248F1B81AC4B1F4045EC1EB692AD8" xlink:type="arc" />
    <link:label id="lab_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78_terseLabel_en-US" xlink:label="lab_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">One Time Before 5/15/2016</link:label>
    <link:label id="lab_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78_label_en-US" xlink:label="lab_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemption Period One Time Before May 15 2016 [Member]</link:label>
    <link:label id="lab_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Redemption Period One Time Before May 15 2016 [Member]</link:label>
    <link:loc xlink:href="ktos-20160327.xsd#ktos_RedemptionPeriodOneTimeBeforeMay152016Member" xlink:label="loc_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78" xlink:to="lab_ktos_RedemptionPeriodOneTimeBeforeMay152016Member_023351957860556785DC5EC1EB694B78" xlink:type="arc" />
    <link:label id="lab_us-gaap_RangeAxis_D6E06838978E9694D8C15EC1EB693055_terseLabel_en-US" xlink:label="lab_us-gaap_RangeAxis_D6E06838978E9694D8C15EC1EB693055" 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_D6E06838978E9694D8C15EC1EB693055_label_en-US" xlink:label="lab_us-gaap_RangeAxis_D6E06838978E9694D8C15EC1EB693055" 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_D6E06838978E9694D8C15EC1EB693055" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeAxis_D6E06838978E9694D8C15EC1EB693055" xlink:to="lab_us-gaap_RangeAxis_D6E06838978E9694D8C15EC1EB693055" xlink:type="arc" />
    <link:label id="lab_us-gaap_RangeMember_7DE9E36412A3C85209805EC1EB693A87_terseLabel_en-US" xlink:label="lab_us-gaap_RangeMember_7DE9E36412A3C85209805EC1EB693A87" 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_7DE9E36412A3C85209805EC1EB693A87_label_en-US" xlink:label="lab_us-gaap_RangeMember_7DE9E36412A3C85209805EC1EB693A87" 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_7DE9E36412A3C85209805EC1EB693A87" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeMember_7DE9E36412A3C85209805EC1EB693A87" xlink:to="lab_us-gaap_RangeMember_7DE9E36412A3C85209805EC1EB693A87" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinimumMember_632C04A69FF4A95519965EC1EB6906E8_terseLabel_en-US" xlink:label="lab_us-gaap_MinimumMember_632C04A69FF4A95519965EC1EB6906E8" 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_632C04A69FF4A95519965EC1EB6906E8_label_en-US" xlink:label="lab_us-gaap_MinimumMember_632C04A69FF4A95519965EC1EB6906E8" 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_632C04A69FF4A95519965EC1EB6906E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinimumMember_632C04A69FF4A95519965EC1EB6906E8" xlink:to="lab_us-gaap_MinimumMember_632C04A69FF4A95519965EC1EB6906E8" xlink:type="arc" />
    <link:label id="lab_us-gaap_MaximumMember_AB0B96C8B1B51DD0309D5EC1EB69D459_terseLabel_en-US" xlink:label="lab_us-gaap_MaximumMember_AB0B96C8B1B51DD0309D5EC1EB69D459" 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_AB0B96C8B1B51DD0309D5EC1EB69D459_label_en-US" xlink:label="lab_us-gaap_MaximumMember_AB0B96C8B1B51DD0309D5EC1EB69D459" 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_AB0B96C8B1B51DD0309D5EC1EB69D459" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaximumMember_AB0B96C8B1B51DD0309D5EC1EB69D459" xlink:to="lab_us-gaap_MaximumMember_AB0B96C8B1B51DD0309D5EC1EB69D459" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_88AC4E47D88C1E3BAD855EC1EB692F91_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_88AC4E47D88C1E3BAD855EC1EB692F91" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stated interest rate percentage</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_88AC4E47D88C1E3BAD855EC1EB692F91_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_88AC4E47D88C1E3BAD855EC1EB692F91" 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_88AC4E47D88C1E3BAD855EC1EB692F91" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_085095BA3B8D58C4AE9D5EC1EB695695_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_085095BA3B8D58C4AE9D5EC1EB695695" 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_085095BA3B8D58C4AE9D5EC1EB695695" xlink:type="locator" />
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    <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_9AA32F9B206D4F777F2F5EC1EB697EA4" xlink:type="locator" />
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    <link:label id="lab_ktos_ScenarioFiveMember_0002AAC4EF3E0EAA6A505B0B4B9F2B71_label_en-US" xlink:label="lab_ktos_ScenarioFiveMember_0002AAC4EF3E0EAA6A505B0B4B9F2B71" 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_0002AAC4EF3E0EAA6A505B0B4B9F2B71_documentation_en-US" xlink:label="lab_ktos_ScenarioFiveMember_0002AAC4EF3E0EAA6A505B0B4B9F2B71" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Scenario Five [Member]</link:label>
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    <link:label id="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_1A599E8CD15CE2E09ED25B0B4BA017CD_documentation_en-US" xlink:label="lab_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_1A599E8CD15CE2E09ED25B0B4BA017CD" 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-20160327.xsd#ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember" xlink:label="loc_ktos_TwoThousandFourteenCreditAgreementThirdAmendmentMember_1A599E8CD15CE2E09ED25B0B4BA017CD" xlink:type="locator" />
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    <link:label id="lab_us-gaap_BaseRateMember_9C9D33DD490F9C10B5BB5B0B4BA16AF4_label_en-US" xlink:label="lab_us-gaap_BaseRateMember_9C9D33DD490F9C10B5BB5B0B4BA16AF4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Base Rate [Member]</link:label>
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    <link:label id="lab_us-gaap_EurodollarMember_EA3537540182AAC8C2635B0B4BA1E883_terseLabel_en-US" xlink:label="lab_us-gaap_EurodollarMember_EA3537540182AAC8C2635B0B4BA1E883" 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_EA3537540182AAC8C2635B0B4BA1E883_label_en-US" xlink:label="lab_us-gaap_EurodollarMember_EA3537540182AAC8C2635B0B4BA1E883" 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_EA3537540182AAC8C2635B0B4BA1E883" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7C840DAE85FC6F6F51725B0B4BA2026A_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7C840DAE85FC6F6F51725B0B4BA2026A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal Group Name [Axis]</link:label>
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    <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_7C840DAE85FC6F6F51725B0B4BA2026A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7C840DAE85FC6F6F51725B0B4BA2026A" xlink:to="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_7C840DAE85FC6F6F51725B0B4BA2026A" xlink:type="arc" />
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    <link:label id="lab_ktos_HerleyIndustriesIncMember_42A8722CEF169E58F6D35B0B4BA2704F_terseLabel_en-US" xlink:label="lab_ktos_HerleyIndustriesIncMember_42A8722CEF169E58F6D35B0B4BA2704F" 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_42A8722CEF169E58F6D35B0B4BA2704F_label_en-US" xlink:label="lab_ktos_HerleyIndustriesIncMember_42A8722CEF169E58F6D35B0B4BA2704F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Herley Industries Inc [Member]</link:label>
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