Marines with the 15th Marine Expeditionary Unit shake their heads vigorously to ensure they have properly fitted their M50 Joint Service General Purpose Mask during their unit’s chemical, biological, radiological and nuclear defense mask confidence training at Camp Margarita aboard Camp Pendleton, Calif., Sept. 17. ( Marine Corps photo by Cpl. Emmanuel Ramos/Released) Confidence Chamber 130917-M-ST621-039

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Size: 1976px × 1265px
Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
Model Released: No

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