Tech. Sgt. Jason White, 4th Communications Squadron network infrastructure NCO in charge, applies a bandage to a simulated head wound March 26, 2019, at Seymour Johnson Air Force Base, North Carolina. In addition to learning how to respond to a chemical, biological, radiologic or nuclear threat, Airmen also practiced self-aid and buddy care techniques. (U.S. Air Force photo by Airman 1st Class Jacob Derry)