Joint search and extraction team members pull a simulated victim from the rubble at the Muscatatuck Urban Training Center at Camp Atterbury, Ind., July 27, 2012, during exercise Vibrant Response 13. Vibrant Response is a U.S. Northern Command-sponsored 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 Staff Sgt. Keith Anderson)