Marines and sailors with the 15th Marine Expeditionary Unit and various units aboard Camp Pendleton, Calif., dawn and clear their gas masks during gas chamber training Aug. 29, 2014. The training provides Marines and sailors confidence in how to properly wear and clear a gas mask during a chemical or biological assault. ( Marine Corps photo by Staff Sgt. Miguel Carrasco/Released) Marines, sailors train with gas chamber 140829-M-NA953-020

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Size: 1936px × 1291px
Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
Model Released: No

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