Lockheed Martin Corp., King of Prussia, Pennsylvania, was awarded a $996,215,214 contract for the MK21A Reentry Vehicle (RV) program. This contract provides for conducting engineering, manufacturing, and design to provide a low technical risk and affordable RV for Sentinel. Work will be performed in King of Prussia, Pennsylvania, and other various locations, and is expected to be completed by Oct. 20, 2039. This contract is a sole source acquisition. Fiscal 2024 research, development, test and evaluation funds in the amount of $26,612,031 are being obligated at time of award. Air Force Nuclear Weapons Center, Hill Air Force Base, Utah, is the contracting activity (FA8219-24-C-0001).