Left side view from slightly forward of Sikorsky VS-300A in low-level hovering flight, piloted by test pilot Les Morris; an unidentified man places a bundle in the helicopter's nose basket; 1943. Photo: Hans Groenhoff, Smithsonian National Air and Space Museum. Photo 3 of 5 in flying by pulltab

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Left side view from slightly forward of Sikorsky VS-300A in low-level hovering flight, piloted by test pilot Les Morris; an unidentified man places a bundle in the helicopter's nose basket; 1943. Photo: Hans Groenhoff, Smithsonian National Air and Space Museum.