Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas is awarded a $172,100,266 modification (P00001) to a cost-plus-fixed-fee, firm-fixed-price order (N0001920F0002) against a previously issued basic ordering agreement (N0001919G0008). This modification definitizes the order and adds scope to provide special test/tooling equipment for increasing Block 4 manufacturing capacity, as well as procures material modification kits in support of removing life limits, correcting deficiencies, and retrofitting aircraft to incorporate Next Gen Distributed Aperture System hardware and associated Power and Thermal Management System modifications efforts. These modifications are in support of F-35 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 2030. Fiscal 2023 aircraft procurement (Navy) funds in the amount of $208,445; fiscal 2022 aircraft procurement (Air Force) funds in the amount of $67,568,935; fiscal 2022 aircraft procurement (Navy) funds in the amount of $53,866,743; fiscal 2021 aircraft procurement (Navy) procurement funds in the amount of $6,792,712; fiscal 2021 aircraft procurement (Air Force) funds in the amount of $5,148,444; FMS funds in the amount of $1,044,729; and non-U.S. DOD participants funds in the amount of $37,470,258 will be obligated at the time of award, $11,941,156 of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.