The Department of Defense, specifically the U.S. Marine Corps (USMC), is seeking potential vendors for the MARNAV Block 2 Vendor Demonstrations, aimed at modernizing Positioning, Navigation, and Timing (PNT) capabilities. This initiative focuses on finding replacements for the Defense Advanced GPS Receiver (DAGR) and will utilize new Military Code (M-Code) GPS signals and other advanced technologies. The program is critical for enhancing military navigation systems and will involve a full, open competition leading to an Indefinite Delivery, Indefinite Quantity contract, with vendor demonstrations scheduled between February and May 2025. Interested vendors must submit their company information by May 15, 2025, and can contact Ausha Tate at ausha.mcgee@usmc.mil or 703-432-5779 for further details.