Lockheed Martin Corp., Sunnyvale, California, has been awarded a $25,353,435 modification (P00011) to cost-plus-fixed-fee contract HR001120C0028 to exercise Phase 3, Option 3 of the Blackjack satellite integration program. The modification brings the total cumulative face value of the contract to $65,809,492 from $40,456,057. Work will be performed in Sunnyvale, California (80%); Denver, Colorado (10%); Cape Canaveral, Florida (8%); and San Luis Obispo, California (2%), with an estimated completion date of November 2022. Fiscal 2021 research and development funds in the amount of $8,000,000 are being obligated at the time of award. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity.