Official websites use .mil
Secure .mil websites use HTTPS
2nd Lt. Jason R Holbrook, 151st Operations Group, removes his chemical covering before moving to a decontamination point during an Ability to Survive and Operate (ATSO) training exercise October 3. The exercise provided an opportunity for aircrew and support personnel to train in a simulated chemical environment. Air Force photo by Tech. Sgt. Michael D. Evans.