Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $397,726,298 firm-fixed-price, cost-plus-fixed-fee modification (P00003) to a previously awarded indefinite-delivery, indefinite-quantity contract (N0001921D0001). This modification exercises options to procure initial spares in support of F-35 Lightning II Lot 16 deliveries, as well as procures global spares pool and afloat spares package/deployment spares packages for the Air Force, Marine Corps, Navy, 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 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.