D-M conducts training exercise
U.S. Airmen perform buddy checks during a chemical, biological, radiological or nuclear attack training exercise at Davis-Monthan Air Force Base, Ariz., Feb. 11, 2018. During the simulated chemical attack, the Airmen were instructed to don their gas masks and perform buddy checks. (U.S. Air Force photo by Senior Airman Cheyenne A. Powers)