Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas is awarded a $30,719,215 cost-plus-fixed-fee, firm-fixed-price modification (P00005) to order (N0001923F0002) against a previously issued basic ordering agreement (N0001919G0008). This modification exercises an option and adds scope for the procurement of material modification kits, special test/tooling equipment, and seeds necessary to support F-35 Joint Strike Fighter aircraft retrofit and modification efforts for the Air Force, Marines, 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 March 2028. Fiscal 2024 aircraft procurement (Navy) funds in the amount of $27,700; fiscal 2022 aircraft procurement (Navy) funds in the amount of $1,561,335; fiscal 2022 aircraft procurement (Air Force) funds in the amount of $670,258; non-U.S. DOD participant funds in the amount of $20,521,044; and FMS funds in the amount of $7,938,878, will be obligated at the time of award, $2,231,593 of which will expire at the end of the current fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.