Hazardous path to survival
U.S. Air Force Senior Airman Amanda Johnson, 35th Aerospace Medical Squadron, tests the air for potential chemical contamination during an Operational Readiness Exercise at Misawa Air Base, Japan, Oct. 8, 2013. Johnson is one of 11 Airmen in the Bioenvironmental Engineering flight who provide contamination information to the emergency operations center for risk assessment. (U.S. Air Force photo by Staff Sgt. Tong Duong)