U.S. Air Force 169th Force Support Squadron Airmen serve lunch to the 169th Fighter Wing, South Carolina Air National Guard, during a yearly Task Qualification Training, Ability to Survive and Operate exercise at McEntire Joint National Guard Base, S.C., March 8, 2019. An ATSO exercise familiarizes Airmen to perform their duties in potential chemical environments. (U.S. Air National Guard video by Master Sgt. Caycee Watson) More