Bell Textron Inc., Fort Worth, Texas, is awarded a $228,168,591 cost-plus-fixed-fee, cost reimbursable, indefinite-delivery/indefinite-quantity contract. This contract provides the H-1 Light/Attack helicopter with new and modified capabilities through System Configuration Sets, which is a combination of software and/or hardware configuration item changes integrated into a previously deployed baseline configuration. These efforts include work on the airframe, aircraft wiring interface terminals, flight controls, and weapon systems interfaces, as well as research alternatives, investigation, and documentation of new capabilities and anomalies related to flight controls, wiring harnesses, and weapons, and developing, integrating, verifying, validating, and testing these systems. Additionally, this contract provides for identification of maintenance activities required to support the systems; research, development, and support of studies and analysis related to configuration items, new subsystems, weapons integration, engineering, and logistics; and all efforts required to accomplish analysis of alternatives, system design, integration, testing, rapid response activities, and system capability improvements for Foreign Military Sales customers and fleet support. Work will be performed in Fort Worth, Texas (99%); and various locations within the continental U.S. (1%), and is expected to be completed in September 2027. No funds will be obligated at the time of award; funds will be obligated on individual orders as they are issued. This contract was not competitively procured pursuant to Defense Federal Acquisition Regulation 6.302-1. The Naval Air Warfare Center Weapons Division, China Lake, California, is the contracting activity (N6893622D0039).