CBRN Training
U.S. Air Force Senior Airman Cody Ivie (left), 921st Contingency Response Squadron, U.S. Air Force Col. John Klein (left), the commanding officer of the 60th Air Mobility Wing, and Senior Airman Alexander Valks (right), 660th Aircraft Maintenance Squadron, inspect their gas masks during a chemical, biological, radiological and nuclear defense survival skills training course on Travis Air Force Base, Calif., Sep. 21, 2017. The course consists of individual and team demonstration performance objectives that provide hands-on training and evaluation of knowledge acquired. (U.S. Air Force photo by Heide Couch)