The Department of Defense, specifically the Navy, is seeking innovative solutions through the Small Business Innovation Research (SBIR) program for an "Alternative Navigation System for Hypersonic Vehicles in GPS-Degraded and GPS-Denied Environments." The objective is to develop non-GPS-based navigation technologies that can provide precise positioning, navigation, and timing (PNT) for hypersonic vehicles, particularly during periods when GPS signals are unavailable due to the formation of a plasma sheath at hypersonic speeds. This initiative is critical for enhancing the operational capabilities of hypersonic vehicles, which are expected to play significant roles in military applications due to their speed, range, and maneuverability. Interested parties should note that the solicitation is open from May 15, 2024, to June 12, 2024, with proposals due by the latter date. For more information, please visit the official SBIR website at https://www.dodsbirsttr.mil/topics-app/.