220308-F-IM475-1005
U.S. Air Force Staff Sgt. Nathan Hoskins, 423rd Civil Engineer Squadron NCO in charge of training, instructs a chemical, biological, radiological and nuclear (CBRN) defense survival skills course at RAF Alconbury, England, March 8, 2022. The course consists of individual knowledge-based and demonstration performance objectives that provide an in-depth education on CBRN defense hazards and protective actions. (U.S. Air Force photo by Senior Airman Jennifer Zima)