Lockheed Martin Corp., Sunnyvale, California, was awarded a $27,132,214 modification (P00010) to contract HR0011-20-C-0028, adding Phase 2 tasks to the previously awarded procurement contract for the Blackjack satellite integration program. During the 15-month Phase 2 baseline program, the Lockheed Martin team will advance its satellite integration approach through critical design review, performing assembly, test, and integration activities on multiple types of commoditized buses, the Blackjack Pit Boss, and various payloads. Lockheed Martin further will provide for the integration of the various Blackjack components into a launch vehicle for on-orbit spacecraft testing. The modification brings the total cumulative face value of the contract to $40,456,057 from $13,323,843. Work will be performed in Sunnyvale, California (80%); Denver, Colorado (10%) Cape Canaveral, Florida (8%); and San Luis Obispo, California (2%), with an expected completion date of July 2022. Fiscal 2021 research and development funds in the amount of $12,664,795 are being obligated at time of award. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity.