A Bofors 40 mm antiaircraft in action aboard an American ship.
"2098 - 2 photos - 2098. U.S. Navy Motion Picture Exchange and U.S. Naval Training School (sound motion picture technicians), U.S. Navy Yard, New York, N.Y. 320. A forty millimeter in action. Note the talker - nested between these hell raisers - he must get information accurately for gun crew from the control tower. - Official U.S. Navy Photograph." Circa 1943