A Sikorsky H-5D transports seriously wounded troops from the front line directly to a hospital ship off the Korean coast. Helicopters made quick evacuation possible for the first time. (Hulton-Deutsch Collection/Corbis)
A Sikorsky H-5D transports seriously wounded troops from the front line directly to a hospital ship off the Korean coast. Helicopters made quick evacuation possible for the first time. (Hulton-Deutsch Collection/Corbis)