80-G-707436:  Deep Sea Diving School, Naval Gun Factory, Washington, D.C. Assistant Officer in Charge, Lieutenant J. H. McDonald indoctrinates students in a classroom discussion on the use of equipment and the fundamental principles of diving.  Lieutenant McDonald was awarded the Medal of Honor for his work in the rescue of the thirty-three men from the sunken submarine USS Squalus (SS 192) in 1939, released February 3, 1950.     U.S. Navy Photograph, now in the collections of the National Archives.  (2016/06/14).
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