The Department of Defense, specifically the Naval Air Systems Command, is seeking proposals for the F-35 Follow on Modernization Block 5 upgrades, with a focus on contract actions directed towards Lockheed Martin Aeronautics Company in Fort Worth, Texas. The procurement aims to facilitate developmental efforts for Block 4 and Block 5 upgrades, including systems engineering, prototype construction support, and comprehensive testing to ensure the F-35 Air System meets future operational requirements. This initiative is critical for maintaining the operational readiness and technological advancement of the F-35 aircraft, which is vital for national defense. Interested parties may submit capability statements or proposals within 15 days of the notice publication, and for subcontracting opportunities, they should contact Sean Lightcap at 817-584-1276.