Watch out
U.S. Air Force Airman 1st Class Erin Johnson, 23d Civil Engineer Squadron emergency management apprentice, removes her biohazard suit after being decontaminated during a chemical, biological, radiological and nuclear exercise at Moody Air Force Base, Ga., April 3, 2014. Johnson responded to the scene in order to identify and contain an unknown chemical substance. (U.S. Air Force photo by Airman 1st Class Ryan Callaghan/Released)