The Boeing Co., Oklahoma City, Oklahoma, has been awarded a $14,508,653 contract modification (P00024) for Option Year Six to previously awarded contract FA8105-16-D-0002 for KC-135 engineering sustainment services. The contract modification provides for recurring engineering services for sustainment of the KC-135 aircraft for one option year. Work will be performed in Oklahoma City, Oklahoma; San Antonio, Texas; Huntsville, Alabama; and Fort Walton Beach, Florida, and is expected to be completed by March 31, 2023. Fiscal 2022 Air Force operations and maintenance funds are being obligated at the time of award. Total cumulative face value of the contract is estimated at $129,092,865. Air Force Life Cycle Management Center, Tinker Air Force Base, Oklahoma, is the contracting activity (FA8105-16-D-0002).