A U.S. Marine "breaks the seal" around his M50 joint service general purpose mask to feel the effects before clearing his mask in the confidence chamber on Marine Corps Air Station Miramar, San Diego, April 19, 2012. Marines train year round to prepare for any and all situations including gas and hazardous attacks.
<dl><dd>Unit: Marine Corps Air Station Miramar / 3rd Marine Aircraft Wing</dd>
<dd>DVIDS Tags: Gas Mask; Gas; MOPP; Gas Chamber; Confidence; Training</dd></dl>
Cpl. Jamean Berry
Taken on 19 April 2012
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