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Staff Sgt. Jeremy Parks advises Airmen of alert conditions during Chemical, Biological, Radiological and Nuclear operations training at Fairchild Air Force Base, Wash., April 10, 2014. The training takes place once per week at the base. Parks is the 92nd Civil Engineer Squadron emergency management logistics NCO in charge. (U.S. Air Force photo by Airman 1st Class Sam Fogleman/Released)
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