80-G-42384: At Naval Air Station, Pensacola, Florida, D.O. Phillips, USN, shows PhoM 2/c how to set diaphragm and shutter speeds on a Fairchild K 20 oblique camera.  This type is used by rear gunners in combat planes.    Photographed:  May 18, 1943.  Official U.S. Navy photograph, now in the collections of the National Archives.  (2016/05/17).
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