The Department of Defense, specifically the United States Air Force, is seeking innovative solutions to create a digital twin of the B-52H legacy aircraft through its Small Business Innovation Research (SBIR) program. The primary objective is to develop Computer-Aided Design (CAD) and Systems Modeling Language (SysML) models that will facilitate the integration of new equipment and reduce future engineering costs as the aircraft continues to operate into the 2050s. This initiative is crucial for enhancing the efficiency and safety of legacy aircraft systems, allowing for better testing and integration of new technologies. Interested parties should note that the solicitation is currently closed, with the next opportunity expected to open on May 15, 2024, and applications due by June 12, 2024. For more information, please visit the official SBIR website at https://www.dodsbirsttr.mil/topics-app/.