Lockheed Martin Corp., Sunnyvale, California (FA8807-24-C-B001); and The Boeing Co., El Segundo, California (FA8807-24-C-B002), have each been awarded a $66,000,000 fixed-price-incentive-fee (firm) contract for Mobile User Objective System Service Life Extension (MUOS SLE) 1. This Phase 1 contract provides for risk reduction and early design activities to reduce risk and uncertainty prior to entering MUOS SLE Phase 2. Work will be performed at the contractors’ facilities and is expected to be completed by July 31, 2025. These contracts were competitive acquisitions, and three offers were received. Fiscal 2023 research, development, test, and evaluation funds in the amount of $23,000,000 ($11,500,000 per awardee) are being obligated at time of award. Space Systems Command, Los Angeles Air Force Base, California, is the contracting activity.