The Boeing Co., Seattle, Washington, has been awarded a $9,610,596 contract modification P00081 to previously awarded contract FA8625-16-C-6599. The award is comprised of a cost-plus-fixed-fee effort for the incorporation of aircraft service bulletins into the VC-25B baseline, and a firm-fixed-price effort for the removal of Mode 4 Identification Friend or Foe on the VC-25B aircraft. The location of performance is Seattle, WA, and San Antonio, Texas, and is expected to be completed by Feb. 28, 2023. This award is the result of a sole-source acquisition. Fiscal 2020 and 2021 research and development funds in the amount of $73,056,185 are being obligated at the time of award to fully fund the contract modification and to increase the amount of incremental funding to the contract. The contracting activity is Air Force Life Cycle Management Center, Wright-Patterson Air Force Base, Ohio.