U.S. Air Force Tech. Sgt. Adam Gatherum, 85th Civil

U.S. Air Force Tech. Sgt. Adam Gatherum, 85th Civil Support Team, Utah National Guard, has his Tyvek, a protective garment, cut away during the decontamination procedure as he portrays a casualty from inside the Pepsi Center where simulated chemicals where present as part of Exercise Vigilant Guard in Denver, Colo., July 25, 2013. Exercise Vigilant Guard is a weeklong training event consisting of scenarios based on wildfires, tornadoes, air craft accidents, hazardous material response, search and rescue, triage, medevac and other emergency-response measures. The training and experience gained from this exercise will provide the Colorado National Guard and supporting military units an opportunity to improve cooperation and operational relationships with their local, state, private sector, non-governmental organizations and federal partners. (U.S. Air National Guard photo by Tech. Sgt. Wolfram M. Stumpf/RELEASED)