U.S. Marine Corps photo by Lance Cpl. Brendan Roethel/Released 130912-M-RT263-001.JPG
Sep 19, 2013
Marines break the seal on their gas mask exposing them to chlorobenzylidene malononitrile, or CS gas, during annual gas chamber training at the Chemical Biological Radiological Nuclear Training Facility aboard Marine Corps Air Station Beaufort, Sept. 12. CBRN training is designed to give Marines the knowledge needed to survive these attacks and gain confidence in their protective equipment.
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