U.S. Marine Corps photo by Lance Cpl. John M. McCall/Released 100422-M-5160M-165.jpg
Apr 22, 2010
Cpl. Erik Westman, 21, a chemical, biological, radiological and nuclear (CBRN) defense specialist from Charleston, S.C., creates CS gas by burning tablets of CS powder at the 33 area gas chamber. Marines from 9th Communication Battalion, 1st Intelligence Battalion and 1st Radio Battalion took part in an annual confidence mask training exercise to learn how to use their gas mask properly and what to do when faced with a chemical attack. (U.S. Marine Corps photo by Lance Cpl. John M. McCall)
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