For heroism in connection with military operations against a hostile force: Sergeant Green distinguished himself by exceptionally valorous actions while serving as an observer on a light observation helicopter on a combat operation in the Republic of Vietnam. Upon learning that two persons had been shot down in the dense jungle near a fortified enemy complex, the pilot of Sergeant Green's helicopter flew directly to the crash site. While the aircraft was hovering dangerously low and exposed to the hostile fire, Sergeant Green spotted the wreckage. Immediately he placed extremely accurate suppressive and protective fire around the aircraft, temporarily silencing the enemy fire that was systematically seeking out the wounded crewmen. Spotting a small unit in the near vicinity, Sergeant Green notified the pilot who immediately flew to their location and with arm and hand signals, he pointed to the crash site. Realizing there was no American advisor with the unit and that the wounded aviators would begin shooting to protect themselves if they heard Vietnamese soldiers approaching, he asked his pilot to put him on the ground. Hovering in the landing zone as close as possible to the crash site, he leaped from his aircraft and raced through the bullet infested landing zone to the aid of the severely injured aviators. With complete disregard for his own personal safety and in the face of heavy enemy fire, Sergeant Green applied first aid to the critically wounded crewman. He then established a defensive perimeter with the friendly reaction unit that had just arrived. After personally carrying the wounded pilot back through the hostile fire to the rescue aircraft, Sergeant Green then remained behind to direct fire and aid in the recovery of the observer's body. His gallantry in action was in keeping with the highest traditions of the military service and reflects great credit upon himself, his unit, and the United States Army.