Marines from Company E, 4th Reconnaissance Battaltion, 4th Marine Division conduct annual gas chamber training where they are exposed to the effects of o-chlorobenzylidene malononitrile or more commonly known as CS gas at Fort McCoy, Wisconsin on August 8, 2018. Each Marine checks the proper wear and functionality of their M50 Joint Service General Purpose Mask (JSGPM), prior to them conducting their mandatory annual Gas Chamber training.

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Size: 1154px × 1734px
Photo credit: © Barney Low / Alamy / Afripics
License: Licensed
Model Released: No

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