Airmen assigned to the 144th Fighter Wing help each other drink water using a canteen and gas mask ear as part of 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)