Airmen 1st Class David Jack (right) and Matthew Hung, 28th Civil Engineer Squadron emergency management journeymen, participate in an emergency management exercise June 3, 2010, at Ellsworth Air Force Base, S.D. The exercise maintains skills needed in chemical, biological, radiological and nuclear detection and decontamination operations as well as emergency management command and control for real world incidents.
U.S. Air Force photo/Airman 1st Class Corey Hook
November 4, 2012
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