United States, March 31 -- RTX Corp., East Hartford, Connecticut, is awarded a $3,813,591,875 modification (P00013) to a cost-plus-incentive-fee, fixed-price incentive undefinitized contract (N0001923C0030). This modification definitizes Lot 18 F135 propulsion system production, as well as provides for the production of F135 propulsion systems in support of lot 19 F-35 aircraft production for the Joint Strike Fighter program for the Air Force, Marine Corps, Navy, F-35 Cooperative Program Partners, and Foreign Military Sales (FMS) customers. Work will be performed in East Hartford, Connecticut (17%); Indianapolis, Indiana (10%); Middletown, Connecticut (8%); Kent, Washington (7%); North Berwick, Maine (4%); El Cajon, California (3%); Cromwel...