U.S. Air Force Tech. Sgt. Carly Edwards, a dental technician with the 139th Medical Group, Missouri Air National Guard, breathes through a powered air purifying respirator at Naval Base Coronado, Calif., May 20, 2013. More than 100 airmen from the Missouri and California National Guard's Homeland Response Force received emergency response training on natural disasters and domestic terrorist attacks. (U.S. Air National Guard photo by Tech. Sgt. Michael Crane/Released)
Tech. Sgt. Michael Crane
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