Staff Sgt. Kenneth Crist, a native of Indianapolis, and supply sergeant for the 438th Chemical Company, 81st Troop Command, Indiana Army National Guard, gets his gas mask adjusted by Sgt. 1st Class Mark Michael during a nuclear, biological and chemical warfare exercise conducted at Camp Atterbury, Ind., June 15. The 81st Troop Command is currently conducting their 15-day annual training at Camp Atterbury where Soldiers train in a variety of events to maintain their unit readiness. Indianapolis Chemical Company Walks Through Gas Chamber 292757

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Photo credit: © PJF Military Collection / Alamy / Afripics
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Keywords: armed, army, atterbury, camp, chamber, conflict, cs, forces, gas, guard, guard., indiana, mask, military, national, soldiers, states, uniforms, united, war