An infantryman assigned to the 2nd Battalion, 325th Infantry Regiment, 2nd Brigade Combat Team, 82nd Airborne Division clears his gas mask during a simulated gas attack while clearing a training objective at Fort Bragg, N.C., May 30, 2013. The chemical environment training is designed to ensure the Global Response Force is ready to deploy to any environment on short notice. (U.S. Army photo by Sgt. Joseph Guenther/Released)
Sgt. Joseph Guenther
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