Emergency response training
U.S. Air Force Senior Master Sgt. Eric Hopkins, a bioenvironmental engineering technician with the 139th Airlift Wing, Missouri Air National Guard, adjusts a powered air purifying respirator worn by Tech. Sgt. Carly Edwards 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)