Navy Diver 2nd Class Chris Welch, assigned to Deep Submergence Unit (DSU), gives the all-OK sign to observers while undergoing testing in a Transportable Recompression Chamber System (TRCS). The TRCS simulates surface decompression for the treatment of decompression sickness and pressure tests for prospective divers. (U.S. Navy photo by Mass Communication Specialist 1st Class Stephen Hickok/Released)
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NORTH ISLAND NAVAL AIR STATION, CA, US
This work, Navy diver recompression system training [Image 1 of 4], by PO1 Stephen Hickok, identified by DVIDS, is free of known copyright restrictions under U.S. copyright law.