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    <link:loc xlink:href="ktos-20151227.xsd#ktos_FavorableOperatingLeaseMember" xlink:label="loc_ktos_FavorableOperatingLeaseMember_A143E524F7BA7BFE7B794E00C0AF281B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_0FBEAE9A94A2DEA9E145397F2C6895B4_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_0FBEAE9A94A2DEA9E145397F2C6895B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
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    <link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_2E14DC3EE56F2672B307397F2C686EE8_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_2E14DC3EE56F2672B307397F2C686EE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensation_95923EA27D48B013E4B4397F2C68C6DE_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_95923EA27D48B013E4B4397F2C68C6DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</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_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_83F405DF6484B9283BF3397F2C6901F5" xlink:type="locator" />
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_A76D19CF4CD3BBD82D2B397F2C694427" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_A76D19CF4CD3BBD82D2B397F2C694427" xlink:type="arc" />
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    <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_D81C6A6ED222D4A27EA2397F2C69A760" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_D81C6A6ED222D4A27EA2397F2C69A760" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_D81C6A6ED222D4A27EA2397F2C69A760" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_2B4B9A9DAE0C8D092C35397F2C695A3A_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_2B4B9A9DAE0C8D092C35397F2C695A3A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Cash paid for acquisitions, net of cash acquired</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_2B4B9A9DAE0C8D092C35397F2C695A3A_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_2B4B9A9DAE0C8D092C35397F2C695A3A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_2B4B9A9DAE0C8D092C35397F2C695A3A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities_D418DA5C285B4734504B397F2C697BD5_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities_D418DA5C285B4734504B397F2C697BD5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of assets</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities_D418DA5C285B4734504B397F2C697BD5_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities_D418DA5C285B4734504B397F2C697BD5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Other Assets, Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities" xlink:label="loc_us-gaap_ProceedsFromSaleOfOtherAssetsInvestingActivities_D418DA5C285B4734504B397F2C697BD5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInRestrictedCash_561E459ADC984CAFA0B4397F2C699257_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInRestrictedCash_561E459ADC984CAFA0B4397F2C699257" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Change in restricted cash</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_IncreaseDecreaseInRestrictedCash" xlink:label="loc_us-gaap_IncreaseDecreaseInRestrictedCash_561E459ADC984CAFA0B4397F2C699257" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_E2BEAD9CC54177F9A1B0397F2C6974E3_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromProductiveAssets_E2BEAD9CC54177F9A1B0397F2C6974E3" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_B0F518EB560C1F9E0CBB397F2C6A478C_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_B0F518EB560C1F9E0CBB397F2C6A478C" 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>
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    <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_1AC8C41586DE1F13099B397F2C6A50C4" xlink:type="locator" />
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    <link:label id="lab_ktos_RedemptionPeriodFourMember_1785A09FB65B8C181467397F2C233F43_documentation_en-US" xlink:label="lab_ktos_RedemptionPeriodFourMember_1785A09FB65B8C181467397F2C233F43" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">After June First Twenty Sixteen [Member]</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentLineItems_C5C6953356E7B745ECB5397F2C243167_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_C5C6953356E7B745ECB5397F2C243167" 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_C5C6953356E7B745ECB5397F2C243167" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_A121055AA6DDD65D8F2F397F2C2417BE_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_A121055AA6DDD65D8F2F397F2C2417BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stated interest rate percentage</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_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_A121055AA6DDD65D8F2F397F2C2417BE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_3258FEAA36155408278E397F2C242AB2_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_3258FEAA36155408278E397F2C242AB2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_3258FEAA36155408278E397F2C242AB2_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_3258FEAA36155408278E397F2C242AB2" 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_3258FEAA36155408278E397F2C242AB2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_016F587B05E40A2CAC1D397F2C2430CC_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_016F587B05E40A2CAC1D397F2C2430CC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Original issue discount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_016F587B05E40A2CAC1D397F2C2430CC_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_016F587B05E40A2CAC1D397F2C2430CC" 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_016F587B05E40A2CAC1D397F2C2430CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscount_016F587B05E40A2CAC1D397F2C2430CC" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedDiscount_016F587B05E40A2CAC1D397F2C2430CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtIssuanceCosts_BB6DE69FFA27EAC0FAA7397F2C24FEB0_terseLabel_en-US" xlink:label="lab_us-gaap_DebtIssuanceCosts_BB6DE69FFA27EAC0FAA7397F2C24FEB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt issuance costs</link:label>
    <link:label id="lab_us-gaap_DebtIssuanceCosts_BB6DE69FFA27EAC0FAA7397F2C24FEB0_label_en-US" xlink:label="lab_us-gaap_DebtIssuanceCosts_BB6DE69FFA27EAC0FAA7397F2C24FEB0" 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_BB6DE69FFA27EAC0FAA7397F2C24FEB0" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromLinesOfCredit_55F05ECE0F9D9BFB7C7B397F2C24780C_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLinesOfCredit_55F05ECE0F9D9BFB7C7B397F2C24780C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Credit agreement borrowings</link:label>
    <link:label id="lab_us-gaap_ProceedsFromLinesOfCredit_55F05ECE0F9D9BFB7C7B397F2C24780C_label_en-US" xlink:label="lab_us-gaap_ProceedsFromLinesOfCredit_55F05ECE0F9D9BFB7C7B397F2C24780C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Lines of Credit</link:label>
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    <link:label id="lab_us-gaap_ProductInformationLineItems_AD97B8EF70062FC6516D5D19BE65F94B_terseLabel_en-US" xlink:label="lab_us-gaap_ProductInformationLineItems_AD97B8EF70062FC6516D5D19BE65F94B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warranty Coverage Period [Line Items]</link:label>
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    <link:label id="lab_ktos_ScenarioOneMember_3D214F66A8C3AF74712C37DD98BA6280_label_en-US" xlink:label="lab_ktos_ScenarioOneMember_3D214F66A8C3AF74712C37DD98BA6280" 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_3D214F66A8C3AF74712C37DD98BA6280_documentation_en-US" xlink:label="lab_ktos_ScenarioOneMember_3D214F66A8C3AF74712C37DD98BA6280" 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-20151227.xsd#ktos_ScenarioOneMember" xlink:label="loc_ktos_ScenarioOneMember_3D214F66A8C3AF74712C37DD98BA6280" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioOneMember_3D214F66A8C3AF74712C37DD98BA6280" xlink:to="lab_ktos_ScenarioOneMember_3D214F66A8C3AF74712C37DD98BA6280" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioTwoMember_0CF9EA57C4BDA343396537DD98BA3A5C_terseLabel_en-US" xlink:label="lab_ktos_ScenarioTwoMember_0CF9EA57C4BDA343396537DD98BA3A5C" 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_0CF9EA57C4BDA343396537DD98BA3A5C_label_en-US" xlink:label="lab_ktos_ScenarioTwoMember_0CF9EA57C4BDA343396537DD98BA3A5C" 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_0CF9EA57C4BDA343396537DD98BA3A5C_documentation_en-US" xlink:label="lab_ktos_ScenarioTwoMember_0CF9EA57C4BDA343396537DD98BA3A5C" 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-20151227.xsd#ktos_ScenarioTwoMember" xlink:label="loc_ktos_ScenarioTwoMember_0CF9EA57C4BDA343396537DD98BA3A5C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioTwoMember_0CF9EA57C4BDA343396537DD98BA3A5C" xlink:to="lab_ktos_ScenarioTwoMember_0CF9EA57C4BDA343396537DD98BA3A5C" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioFiveMember_BBC5D8189E118E09ADC037DD98BA25B1_terseLabel_en-US" xlink:label="lab_ktos_ScenarioFiveMember_BBC5D8189E118E09ADC037DD98BA25B1" 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_BBC5D8189E118E09ADC037DD98BA25B1_label_en-US" xlink:label="lab_ktos_ScenarioFiveMember_BBC5D8189E118E09ADC037DD98BA25B1" 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_BBC5D8189E118E09ADC037DD98BA25B1_documentation_en-US" xlink:label="lab_ktos_ScenarioFiveMember_BBC5D8189E118E09ADC037DD98BA25B1" 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-20151227.xsd#ktos_ScenarioFiveMember" xlink:label="loc_ktos_ScenarioFiveMember_BBC5D8189E118E09ADC037DD98BA25B1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioFiveMember_BBC5D8189E118E09ADC037DD98BA25B1" xlink:to="lab_ktos_ScenarioFiveMember_BBC5D8189E118E09ADC037DD98BA25B1" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioThreeMember_90032DDBEE9E02DA41B337DD98BA7699_terseLabel_en-US" xlink:label="lab_ktos_ScenarioThreeMember_90032DDBEE9E02DA41B337DD98BA7699" 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_90032DDBEE9E02DA41B337DD98BA7699_label_en-US" xlink:label="lab_ktos_ScenarioThreeMember_90032DDBEE9E02DA41B337DD98BA7699" 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_90032DDBEE9E02DA41B337DD98BA7699_documentation_en-US" xlink:label="lab_ktos_ScenarioThreeMember_90032DDBEE9E02DA41B337DD98BA7699" 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-20151227.xsd#ktos_ScenarioThreeMember" xlink:label="loc_ktos_ScenarioThreeMember_90032DDBEE9E02DA41B337DD98BA7699" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioThreeMember_90032DDBEE9E02DA41B337DD98BA7699" xlink:to="lab_ktos_ScenarioThreeMember_90032DDBEE9E02DA41B337DD98BA7699" xlink:type="arc" />
    <link:label id="lab_ktos_ScenarioFourMember_3F44A7178BF4680F699D37DD98BAA931_terseLabel_en-US" xlink:label="lab_ktos_ScenarioFourMember_3F44A7178BF4680F699D37DD98BAA931" 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_3F44A7178BF4680F699D37DD98BAA931_label_en-US" xlink:label="lab_ktos_ScenarioFourMember_3F44A7178BF4680F699D37DD98BAA931" 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_3F44A7178BF4680F699D37DD98BAA931_documentation_en-US" xlink:label="lab_ktos_ScenarioFourMember_3F44A7178BF4680F699D37DD98BAA931" 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-20151227.xsd#ktos_ScenarioFourMember" xlink:label="loc_ktos_ScenarioFourMember_3F44A7178BF4680F699D37DD98BAA931" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_ScenarioFourMember_3F44A7178BF4680F699D37DD98BAA931" xlink:to="lab_ktos_ScenarioFourMember_3F44A7178BF4680F699D37DD98BAA931" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_A4C783F2AC65A5078C6737DD98BA584E_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_A4C783F2AC65A5078C6737DD98BA584E" 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_A4C783F2AC65A5078C6737DD98BA584E_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_A4C783F2AC65A5078C6737DD98BA584E" 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_A4C783F2AC65A5078C6737DD98BA584E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_A4C783F2AC65A5078C6737DD98BA584E" xlink:to="lab_us-gaap_LineOfCreditFacilityLineItems_A4C783F2AC65A5078C6737DD98BA584E" xlink:type="arc" />
    <link:label id="lab_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785_verboseLabel_en-US" xlink:label="lab_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Maturity period (in years)</link:label>
    <link:label id="lab_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785_label_en-US" xlink:label="lab_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785" 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_00DCDED2F5280559DAC337DD98BA3785_documentation_en-US" xlink:label="lab_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785" 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-20151227.xsd#ktos_DebtInstrumentMaturityPeriod" xlink:label="loc_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785" xlink:to="lab_ktos_DebtInstrumentMaturityPeriod_00DCDED2F5280559DAC337DD98BA3785" xlink:type="arc" />
    <link:label id="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_AD69114E9F0E44E4C69B37DD98BB6F83_terseLabel_en-US" xlink:label="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_AD69114E9F0E44E4C69B37DD98BB6F83" 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_AD69114E9F0E44E4C69B37DD98BB6F83_label_en-US" xlink:label="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_AD69114E9F0E44E4C69B37DD98BB6F83" 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_AD69114E9F0E44E4C69B37DD98BB6F83_documentation_en-US" xlink:label="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_AD69114E9F0E44E4C69B37DD98BB6F83" 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-20151227.xsd#ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval" xlink:label="loc_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_AD69114E9F0E44E4C69B37DD98BB6F83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_AD69114E9F0E44E4C69B37DD98BB6F83" xlink:to="lab_ktos_LineOfCreditFacilityMaximumPossibleBorrowingsSubjectToApplicationAndBankApproval_AD69114E9F0E44E4C69B37DD98BB6F83" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E95FBD8FE3DFFEE321937DD98BBD982_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E95FBD8FE3DFFEE321937DD98BBD982" 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_3E95FBD8FE3DFFEE321937DD98BBD982_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E95FBD8FE3DFFEE321937DD98BBD982" 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_3E95FBD8FE3DFFEE321937DD98BBD982" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E95FBD8FE3DFFEE321937DD98BBD982" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum_3E95FBD8FE3DFFEE321937DD98BBD982" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_9161F688C2217AF5841337DD98BBA0BB_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_9161F688C2217AF5841337DD98BBA0BB" 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_9161F688C2217AF5841337DD98BBA0BB_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_9161F688C2217AF5841337DD98BBA0BB" 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_9161F688C2217AF5841337DD98BBA0BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_9161F688C2217AF5841337DD98BBA0BB" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum_9161F688C2217AF5841337DD98BBA0BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_08C7B3E93684AFA8DDBE37DD98BBF96C_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_08C7B3E93684AFA8DDBE37DD98BBF96C" 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_08C7B3E93684AFA8DDBE37DD98BBF96C_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_08C7B3E93684AFA8DDBE37DD98BBF96C" 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_08C7B3E93684AFA8DDBE37DD98BBF96C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_08C7B3E93684AFA8DDBE37DD98BBF96C" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_08C7B3E93684AFA8DDBE37DD98BBF96C" xlink:type="arc" />
    <link:label id="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D_terseLabel_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum amount required to repurchase</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D_label_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D" 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_665C77B269A7D15F5DF937DD98BB160D_documentation_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D" 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-20151227.xsd#ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased" xlink:label="loc_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D" xlink:to="lab_ktos_LineofCreditFacilityCovenantComplianceRequiredAmountofLoanRepurchased_665C77B269A7D15F5DF937DD98BB160D" xlink:type="arc" />
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_F7FA21BEFDE9F0A9781B37DD98BB922A_terseLabel_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_F7FA21BEFDE9F0A9781B37DD98BB922A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Covenant terms, capacity of outstanding loans of credit</link:label>
    <link:label id="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_F7FA21BEFDE9F0A9781B37DD98BB922A_label_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_F7FA21BEFDE9F0A9781B37DD98BB922A" 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_F7FA21BEFDE9F0A9781B37DD98BB922A_documentation_en-US" xlink:label="lab_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_F7FA21BEFDE9F0A9781B37DD98BB922A" 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-20151227.xsd#ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing" xlink:label="loc_ktos_LineofCreditFacilityCovenantTermsCapacityofOutstandingBorrowing_F7FA21BEFDE9F0A9781B37DD98BB922A" xlink:type="locator" />
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