United Technologies Corp., Pratt and Whitney Military Engines, East Hartford, Connecticut, is awarded a $736,636,842 modification (P00002) to a previously awarded firm-fixed-price indefinite-delivery/indefinite-quantity contract (N0001920D0013). This modification increases the ceiling to procure propulsion system spare parts, modules, support equipment/packaging handling shipping and transportation material, and depot lay-in material in support of the F-135 propulsion system requirements of the Air Force, Marine Corps, Navy, and non-Department of Defense participants. Work will be performed in East Hartford, Connecticut (56%); North Berwick, Maine (13%); Indianapolis, Indiana (10%); Jupiter, Florida (7%); Windsor Locks, Connecticut (5%); Bristol, United Kingdom (4%); Rockford, Illinois (2%); Santa Isabel, Puerto Rico (2%); and Phoenix, Arizona (1%), 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.