Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a not-to-exceed $10,083,352 undefinitized cost modification (P00006) to a previously awarded contract (N0001923C0003). This modification adds scope to procure production parts with significant lead times in support of equipping a Marine Corps short take-off and vertical landing F-35 aircraft with flight test instrumentation. Work will be performed in Fort Worth, Texas (30%); El Segundo, California (25%); Warton, United Kingdom (20%); Orlando, Florida (10%); Nashua, New Hampshire (5%); Grenaa, Denmark (5%); and Baltimore, Maryland (5%), and is expected to be completed in January 2025. Fiscal 2024 research, development, test, and evaluation (Navy) funds in the amount of $5,041,675 will be obligated at the time of award, none of which will expire at the end of the current fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.