U.S. Army Staff Sgt. Jeff Brady, (right) decontamination readiness noncommissioned officer with the 115th Maintenance Company, Utah National Guard, assists emergency room nurses at Exempla St. Joseph Hospital with decontaminating a mock victim during a natural-disaster training scenario decontamination exercise, at Exempla St. Joseph Hospital in Denver, Colo., July 23, 2013, as part of the 2013 Vigilant Guard exercise. Vigilant Guard, hosted by the Colorado National Guard, is a large-scale, multi-state, multi-agency exercise focused on inter-agency coordination in preparation for emergencies and catastrophic events in Colorado. (U.S. Army National Guard photo by Spc. Zach Sheely)

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Photo by: Spc. Zach Sheely |  VIRIN: 130723-A-VX744-095.JPG