The Department of Defense, specifically the United States Air Force (USAF), is seeking proposals for the Highly Adaptative Propulsion Experiment (HAP-E) under the SBIR program. This initiative aims to advance the development of Solid Rocket Motors and other compact propulsion systems to enhance the USAF's Long-Range Strike Capacity while reducing costs and improving adaptability for various weapon systems. The focus is on creating a more robust industrial base capable of efficiently producing reliable propulsion systems, addressing supply chain fragility, and ensuring scalability for air assets. The solicitation is currently in the pre-release phase, with proposals due by June 25, 2025. Interested parties can find more information and submit proposals through the official SBIR website at https://www.dodsbirsttr.mil/topics-app/.