Marines from the Chemical, Biological Incident Response Force use a cordless rotary saw to cut through a sheet of metal during a search and extraction operation, which is part of the Vibrant Response 13 field training exercise at the Muscatatuck Urban Training Center, Ind., July 29. The CBRIF unit used high-powered tools and equipment to maneuver through four levels of a collapsing building and evacuate civilians during the training venue. (Official DOD photo by U.S. Army Sgt. Terence Ewing/Released)