Army Reserve Soldiers assigned to 412th Civil Affairs Battalion, Columbus, Ohio, provide medical treatment to manikins simulating survivors of a nuclear bomb Aug. 4, during Vibrant Response 14, Camp Atterbury Joint Maneuver Training Center, Ind. Vibrant Response is a U.S. Northern Command-sponsored, U.S. Army North-led, field training exercise for chemical, biological, radiological, nuclear and high-yield explosive consequence management forces designed to improve their ability to respond to catastrophic incidents. (U.S. Army photo by Spc Caitlyn Byrne, 27th Public Affairs Detachment)