https://www.youtube.com/watch?v=oZ8f5A4tzZg
U.S. Marine Corps recruits prepare and perform Chemical, Biological, Radiological and Nuclear (CBRN) defense exercise during basic training at Marine Corps Recruit Depot Parris Island, SC.
Training for CBRN defense is an event in which recruits experience the exposure of gasses and learn the proper usage of a gas mask.
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