RTX Corp., Pratt and Whitney Military Engines, East Hartford, Connecticut, is awarded a $211,967,432 modification (P00017) to a previously awarded firm-fixed-price, cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract (N0001920D0013). This modification adds scope to procure additional initial spares for production of F135 propulsion systems, as well as to supply depots, common global spares pool, and country unique spares in support of the Joint Strike Fighter program for the Air Force, Marine Corps, Navy, F-35 cooperative program partners, and Foreign Military Sales customers. Work will be performed in East Hartford, Connecticut (91%) (labor surplus area); North Berwick, Maine (4%); South Windsor, Connecticut (2%); Rockford, Illinois (1%) (labor surplus area); Santa Isabel, Puerto Rico (1%) (labor surplus area); and Phoenix, Arizona (1%), and is expected to be completed in December 2027. No funds will be obligated at the time of award, funds will be obligated on individual orders as they are issued. The contract that is being modified was not completed. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.