Indiana Sen. Joe Donnelly shakes the hand of a Soldier participating in the exercise Vibrant Response 13-2 at Muscatatuck Urban Training Center in Butlerville, Ind., Aug. 5, 2013. 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 National Guard photo by Ashley Roy/Released)