U.S. Coast Guard Rear Adm. June E. Ryan, center, the military adviser to the secretary of the Department of Homeland Security, receives a brief from a civilian contractor concerning a collapsed parking garage scenario Aug. 3, 2013, as part of Vibrant Response 13-2 at the Muscatatuck Urban Training Center in Indiana. 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.