Keywords: blackandwhite monochrome black and white 428-GX-USN 1163593: U.S. Naval School of Diving and Salvage, Washington Navy Yard, Washington, D.C. U.S. Navy men keep close watch on the gauges denoting oxygen used by the divers while they are making a dive during open sea helium and oxygen training dives. Photographed by PH1 (DV) S.L. Waterman, July 1975. U.S. Navy Photograph, now in the collections of the National Archives. (2016/06/14). 428-GX-USN 1163593: U.S. Naval School of Diving and Salvage, Washington Navy Yard, Washington, D.C. U.S. Navy men keep close watch on the gauges denoting oxygen used by the divers while they are making a dive during open sea helium and oxygen training dives. Photographed by PH1 (DV) S.L. Waterman, July 1975. U.S. Navy Photograph, now in the collections of the National Archives. (2016/06/14). |