The Department of Defense, through the Naval Air Systems Command, intends to award a sole source contract for the Next Generation Mission Planning (NGMP) related to the F-35 Lightning II program. This procurement aims to deliver mission planning tools and data handling capabilities to the U.S. Air Force, Navy, Marine Corps, and international partners, focusing on enhancing Block 4 capabilities through various engineering and development tasks. Lockheed Martin Aeronautics Company, the sole designer and integrator of the F-35, is the only responsible source capable of fulfilling these requirements due to its unique expertise and proprietary technology. Interested parties may submit capability statements within 15 days of this notice, and inquiries can be directed to Thomas Messier at Thomas.Messier@jsf.mil.