The Department of Defense, specifically the Department of the Air Force, is soliciting proposals for the Global Positioning System (GPS) Engineering, Analysis, and Remote Site Sustainment III (GEARSS III) contract. This procurement aims to secure engineering and analytical services, as well as sustainment support for GPS operations at various military installations, including Schriever Space Force Base and Vandenberg Space Force Base. The selected contractor will play a crucial role in maintaining and enhancing GPS capabilities, which are vital for national defense and military operations. Proposals are due by May 12, 2025, and interested small businesses should contact Matthew Buchanan at matthew.buchanan@spaceforce.mil or Christopher Cook at christopher.cook.62@spaceforce.mil for further information and access to the Bidder’s Library.