A Marine with Headquarters Battalion, 3rd Marine Division, clears his gas mask while in the gas chamber on Camp Hansen, Okinawa, Japan, April 5, 2019. Marines in Okinawa complete gas chamber training annually to stay proficient in their ability to use an M50 gas mask.

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Photo credit: © Apple White / Alamy / Afripics
License: Licensed
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Keywords: 3md, 3rd, anual, archive, armed, break, cbrn, chamber, corps, defence, devil, division, dogs, forces, gas, gassed, marine, military, rah, reportage, seal, servicemen, training, usa, usmc, yut