Advanced Technology Systems Co. Inc., McLean, Virginia, has been awarded a $12,641,849 firm-fixed-price, indefinite-delivery/indefinite-quantity contract action for the T53 depot-level engine maintenance. The contractor will provide maintenance, repair and overhaul repairs of the T53 engine. Work will be performed in both McLean, Virginia; and Hooper, Nebraska, and is expected to be completed in April 2031. This award is the result of a competitive acquisition and three offers were received. Fiscal 2021 operation and maintenance funds in the amount of $187,193 are being obligated at the time of award under task order FA8124-21-F-0023. Air Force Life Cycle Management Center, Tinker Air Force Base, Oklahoma, is the contracting activity (FA8124-21-D-0002).