The Department of Defense, specifically the Naval Air Systems Command (NAVAIR), is seeking to conduct an Engineering Investigation (EI) for the testing of FMU-139D/B fuzes, which are critical components for the F-35 aircraft. The objective of this procurement is to generate a post-test report documenting the testing of 20 fuzes owned by Northrop Grumman Corporation, the sole designer and manufacturer of these fuzes, to obtain approval for their use across all F-35 variant platforms. This opportunity is significant as it ensures the continued operational capability and safety of the F-35 fleet. Interested parties may express their interest and capability by contacting Elizabeth Scott or Jennifer Vance via email, although this notice is not a request for competitive proposals and does not guarantee a contract award.