U.S. Air Force Senior Airman Paul Richter, a search and extraction medic with the Chemical, Biological, Radiological, Nuclear Enhanced Response Force Package, Colorado National Guard, uses a petrogen oxy-gasoline cutting torch system to cut away the mangled metal of a man-made rubble pile in an effort to extract a mock victim during exercise Vigilant Guard 2013, at the North Metro Fire Rescue District Training Center in Northglenn, Colo., July 24, 2013.