The Department of Defense, specifically the Joint Program Executive Office Armaments and Ammunition (JPEO A&A) Project Manager Maneuver Ammunition Systems (PM MAS), is seeking innovative solutions for small form-factor power sources to support advanced ammunition fuzing technologies. The objective is to expand the supplier base and production capacity for power sources that can maintain an extended shelf-life, fit within a 400 mm³ cylindrical volume, and operate under extreme conditions while supplying 50 to 200 mW for the duration of the mission. This initiative is critical as it addresses the increasing demand for advanced fuzing capabilities across various military services and platforms. Interested parties can submit Phase I proposals with a funding limit of $250,000, due by June 25, 2025, with the opportunity opening on May 28, 2025. For more information, visit the official solicitation page at DOD SBIR/STTR.