A Marine Corps recruit with Fox Company, 2nd Recruit Training Battallion, participates in an exercise inside the confidence chamber at Marine Base Camp Pendleton, Calif., April 4, 2023. The confidence chamber was filled with chlorobenzalmalononitrile, a form of tear gas, to instill confidence in recruits’ skills and their gear in the event of a chemical, biological, radiological, or nuclear attack.

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Photo credit: © piemags/military23 / Alamy / Afripics
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Keywords: corps, diego, marine, marines, mcrd, recruit, san, training