The U.S. Navy North American PBJ-1D "Mitchell" patrol bomber (BuNo 35094) undergoing flight tests at Naval Air Station Patuxent River, Maryland (USA), circa in the Summer of 1943. A Mark XIII torpedo is hung below this PBJ's bomb bay.
USN
Official U.S. Navy photo <a rel="nofollow" class="external text" href="http://www.history.navy.mil/our-collections/photography/numerical-list-of-images/nara-series/80-g/80-G-400000/80-G-408567.html">80-G-408567</a> from the U.S. Navy <a rel="nofollow" class="external text" href="http://www.history.navy.mil">Naval History and Heritage Command</a>