AL UDEID AIR BASE, Qatar --   U.S. Air Force Master Sgt. Johnnie Powell, a section chief for the contracting representative office with the 379th Expeditionary Force Support Squadron, demonstrates how to bandage a casualty with a chest wound during ability to survive and operate training Nov. 20, 2020, at Al Udeid Air Base, Qatar. During the ATSO training, Airmen learned how to immediately recover and respond in the aftermath of an attack without impeding the mission of the base. (U.S. Air National Guard photo by Tech. Sgt. Brigette Waltermire)