Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $347,435,068 firm-fixed-price modification (P00017) to a previously awarded indefinite-delivery/indefinite-quantity contract (N0001919D0015). This modification adds scope to procure Lots 15-16 helmet mounted display system requirements in support of the F-35 Joint Strike Fighter aircraft for the Air Force, Marine Corps, Navy, F-35 Cooperative Program Partners, and Foreign Military Sales customers. Work will be performed in Fort Worth, Texas, and is expected to be completed in December 2026. No funds will be obligated at the 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.