U.S. Air Force Chief Master Sgt. Benjamin Torres, 144th Civil Engineer Squadron emergency manager, conducts the chemical, biological, radiological, and nuclear training portion of the expeditionary skills course held at the Fresno Air National Guard Base March 5, 2016. The ESC included training in both CBRN and self-aid and buddy care. (U.S. Air National Guard photo by Senior Airman Klynne Pearl Serrano)