(U.S. Marine Corps photo by Lance Cpl. Demetrius Morgan/RELEASED)

Marines with the 11th MEU’s command element properly break the seal of their masks during annual gas chamber confidence training here Oct 18. All Marines and sailors were instructed to poke two fingers through their masks while closing their eyes and holding their breath for as long as needed. They were then instructed to remove their fingers and properly clear their masks.

121019-M-ET630-131.JPG Photo By: Lance Cpl. Demetrius Morgan

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11th MEU trains in gas chamber

Oct 19, 2012

Camp Pendleton, Calif. - Marines with the 11th MEU’s command element properly break the seal of their masks during annual gas chamber confidence training here Oct 18. All Marines and sailors were instructed to poke two fingers through their masks while closing their eyes and holding their breath for as long as needed. They were then instructed to remove their fingers and properly clear their masks.

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