Airmen perform seal checks on their gas masks at Moody Air Force Base, Ga., Feb. 1, 2018, during a chemical, biological, radiological and nuclear defense class. Air Force photo by Airman Eugene Oliver
Airmen perform seal checks on their gas masks at Moody Air Force Base, Ga., Feb. 1, 2018, during a chemical, biological, radiological and nuclear defense class. Air Force photo by Airman Eugene Oliver