Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $42,134,921 firm-fixed-price modification (P00014) to a previously awarded indefinite-delivery/indefinite-quantity contract (N0001919D0015). This modification exercises an option to procure ancillary mission equipment in support of F-35 Joint Strike Fighter Lot 16 production aircraft for the Navy, Marine Corps, Air Force, Foreign Military Sales customers, and non-U.S. Department of Defense participants. Work will be performed in Fort Worth, Texas, and is expected to be completed in December 2024. No funds are being obligated at time of award; funds will be obligated on individual orders as they are issued. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.