U.S. Marine Corps photo by Cpl. Joshua Young/Released 130326-M-PF875-007.JPG
Apr 1, 2013
Cpl. Ronald Isaacs, 24, from Bluff City, Tenn., a chemical, biological, radiological, nuclear defense chief with 9th Communication Battalion, I Marine Expeditionary Force, instructs I MEF Marines on the procedures to don and clear a gas mask inside a gas chamber at Camp Pendleton, Calif., March 26. The training provides Marines with a basic knowledge of how to don and clear a gas mask to effectively defend against chemical or biological assaults.
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