U.S. Soldiers and Airmen with the Chemical, Biological, Radiological, Nuclear Enhanced Response Force Packagge, Colorado National Guard, and the 152nd Air Wing, Nevada Air National Guard, assist a mock victim during a natural disaster training scenario July 24, 2013, at the North Metro Fire Rescue District Training Center in Northglenn, Colo., as part of Vigilant Guard 2013. Vigilant Guard is a series of federally funded disaster-response drills conducted by National Guard units working with federal, state and local emergency management agencies and first responders. (U.S. Army National Guard photo by Spc. Zach Sheely/Released)