Air Force Tech. Sgt. Brenton Deal, a bioenvironmental engineer assigned to the 175th Medical Group, works on a computer June 22, 2017, in the emergency operations center at Warfield Air National Guard Base, Middle River, Md. Deal was participating in an active shooter training exercise and was assisting the EOC in taking full accountability of base Airmen. (U.S. Air National Guard photo by Airman Sarah M. McClanahan)
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