Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded an $8,057,109 modification (P00025) to a cost-plus-fixed-fee, firm-fixed-price order (N0001920F0571) against a previously issued basic ordering agreement (N0001919G0008). This modification exercises options to procure material modification kits, special test/tooling equipment, and product engineering support, in support of various F-35 aircraft modifications and retrofit efforts for the Air Force, Navy, and Marine Corps. Work will be performed in Fort Worth, Texas, and is expected to be completed in September 2028. Fiscal 2023 aircraft procurement (Air Force) funds in the amount of $6,719,986; fiscal 2023 aircraft procurement (Navy) funds in the amount of $347,342; fiscal 2022 aircraft procurement (Navy) funds in the amount of $317,056; fiscal 2022 aircraft procurement (Air Force) funds in the amount of $86,337; fiscal 2021 aircraft procurement (Air Force) funds in the amount of $586,388, will be obligated at the time of award, $586,388 of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.