Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $27,968,786 modification (P00007) to a previously awarded cost-plus-fixed-fee undefinitized contract (N0001924C0011). This modification adds scope to provide program management support for special tooling/special test equipment in support of F-35 production aircraft, as well as aircraft modifications and flight test instrumentation in support of the Joint Strike Fighter aircraft for the Air Force, Marine Corps, Navy, Foreign Military Sales (FMS) customers, and non-U.S. Department of Defense (DOD) participants. Work will be performed in Fort Worth, Texas, and is expected to be completed in December 2028. Fiscal 2025 research, development, test and evaluation (Navy) funds in the amount of $88,638; fiscal 2025 research, development, test and evaluation (Air Force) funds in the amount of $88,638; fiscal 2024 aircraft procurement (Air Force) funds in the amount of $10,035,130; fiscal 2024 aircraft procurement (Navy) funds in the amount of $8,680,828; non-U.S. DOD participants funds in the amount of $5,508,125; and FMS customer funds in the amount of $3,567,430, will be obligated at 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.