U.S. Army Soldiers, assigned to the 129th Area Support Medical Company, from Centerville, Ala., conduct decontamination operations during the Vibrant Response 13 exercise at the Muscatatuk Urban Training Center in Butlerville, Ind., Aug. 10, 2012. More than 400 service members from active and reserve Army components from across the U.S. took part in Vibrant Response 13, a major exercise conducted by U.S. Northern Command and led by U.S. Army North. (U.S. Army photo by Sgt. 1st Class Matthew Veasley/Released)