Headquarters and Headquarters Battery, 210th Fires Brigade, 2nd Infantry Division, conducts chemical, biological, radiological, nuclear training on Camp Casey, South Korea, June 6, 2013. CBRN training is defensive in nature. It provides soldiers the best possible chance of successfully operating in a contaminated environment. (U.S. Army photo by Cpl. Kim Han-byeol, 210th Fires Brigade public affairs specialist/Released)