Taken in 1980 at Naval Diving and Salvage Training Center in Panama City, FL. Mary Bonnin, accompanied by First Class diving students Walt Boyd and (now deceased) Chuck Bloomer, preparing for a Mark V mixed gas training dive.
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Own work based on: <a href="//commons.wikimedia.org/wiki/File:Mary_Bonnin.pdf" title="File:Mary Bonnin.pdf">Mary Bonnin.pdf</a>