Sergeant James D. Locker distinguished himself by gallantry in connection with military operations against an opposing armed force as a rescue specialist on an HH-3E helicopter in Southeast Asia on 9 June 1968.  On that date, Sergeant Locker participated in the attempted rescue of a downed pilot in one of the most heavily defended areas in Southeast Asia.  Despite intense, accurately directed hostile fire which severely damaged another aircraft, Sergeant Locker, with undaunted determination, indomitable courage, and professional skill, stood in the open helicopter doorway awaiting deployment to assist the downed pilot when his aircraft was downed by hostile fire.  By his gallantry and devotion to duty, Sergeant Locker has reflected great credit upon himself and the United States Air Force.