U.S. Soldiers and Airmen with the CERFP (CBRN - Chemical, Biological, Radiological, Nuclear - Enhanced Response Force Package), Colorado National Guard, and the 152nd Air Wing, Nevada National Guard, assist a mock victim, center, during a natural-disaster training scenario of Vigilant Guard Exercise 2013 at the North Metro Fire Rescue District Training Center in Northglenn, Colo., July 24, 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)