Pfc. Christopher A. McCullough, of Memphis, Tenn., a combat engineer with the 150th Engineer Battalion, 155th Armored Brigade Combat Team, Mississippi Army National Guard, interacts with role playing demonstrators at the Rotational Unit Bivouac Area at the National Training Center in Fort Irwin, Calif., May 25, 2017. (Mississippi National Guard photo by Sgt. Connie Jones, 102d Public Affairs Detachment)

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Photo credit: © PJF Military Collection / Alamy / Afripics
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Keywords: 155ntc17, army, cbrn, chemical, guard, illinois, mississippi, msng, national, ng, ntc, roleplay