The Department of Defense, specifically the Naval Air Systems Command, is seeking to procure flight test instrumentation (FTI) for the F-35 Lightning II aircraft from Lockheed Martin Aeronautics Company, based in Fort Worth, Texas. This procurement aims to support the test and evaluation of modernization efforts, including Follow on Modernization Block 4 and Block 5, as well as future weapons integration, encompassing system engineering, design, integration, and support services. The contract will be pursued on a sole source basis, as Lockheed Martin is the only qualified source capable of fulfilling these specialized requirements due to its unique expertise and proprietary technical documentation. Interested parties may submit capability statements, but no competitive proposals will be accepted, and all inquiries should be directed to Bryana Lockwood at bryana.lockwood@jsf.mil.