Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $3,367,476,836 undefinitized modification (P00007) to a previously awarded, cost-plus-fixed-fee, cost-plus-incentive-fee, fixed-price-incentive-fee, and firm-fixed-price contract (N0001924C0039). This modification adds scope to provide continued logistics support to include ground maintenance activities, action request solution, depot activities, automatic logistics information system operations and maintenance, reliability and maintainability, supply chain management, pilot training, maintainer training, and training system sustainment in support of delivered F-35 Lightning II Joint Strike Fighter Air Systems for the Air Force, Marine Corps, Navy, Foreign Military Sales (FMS) customers, and non-Department of Defense (DOD) program partners . Work will be performed in Fort Worth, Texas (57%); Orlando, Florida (26%); Greenville, South Carolina, (11%); Marietta, Georgia, (4%); and Palmdale, California (2%), and is expected to be completed in December 2025. Fiscal 2025 operation and maintenance (Air Force) funds in the amount of $355,507,909; fiscal 2025 operation and maintenance (Marine Corp) funds in the amount of $116,585,114; fiscal 2025 operation and maintenance (Navy) funds in the amount of $63,945,418; FMS customer funds in the amount of $125,723,968; and non-DOD program participant funds in the amount of $231,838,162 will be obligated at time of award, $536,038,441 of which will expire at the end of the current fiscal year. The contract being modified was not competed. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.