Soldiers assigned to 3rd Battalion, 15th Infantry Regiment, 2nd Armored Brigade Combat Team, 3rd Infantry Division, don their Chemical, Biological, Radiological and Nuclear defense masks on, 7 Nov., at Fort Stewart, Ga. Qualifying with a CBRN mask on ensures the accuracy and lethality of Soldiers firing with the masks on in a combat situation. (Spc. Jordyn Worshek, US Army

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