Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $663,134,662 modification (P00094) to a previously awarded cost-plus-fixed-fee, cost-plus incentive-fee, firm-fixed-price-incentive, firm-fixed-price contract (N0001921C0020). This modification adds scope to provide recurring logistics support, including ground maintenance activities, action request resolution, depot activation activities, automatic logistics information system operations and maintenance, reliability and maintainability, supply chain management, pilot and maintainer training, and training system sustainment in support of F-35 Lightning II Joint Strike Fighter Air Systems sustainment efforts for the Navy, Air Force, Marine Corps, Foreign Military Sales (FMS) customers, and non-U.S. Department of Defense (DOD) participants. Work will be performed Fort Worth, Texas (57%); Orlando, Florida (26%); Greeneville, South Carolina (11%); Samlesbury, United Kingdom (4%); El Segundo, California (2%), and is expected to be completed in June 2027. Fiscal 2024 operations and maintenance (Air Force) funds in the amount of $226,328,661; fiscal 2024 operations and maintenance (Navy) funds in the amount of $80,585,851; FMS customer funds in the amount of $58,849; and non-U.S. DOD participant funds in the amount of $130,674,597, will be obligated at the time of award, $306,914,242 of which will expire at the end of the current fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.