An Airman from the 23d Civil Engineer Squadron secures a gas mask during an Ability to Survive and Operate (ATSO) Rodeo, Sept. 20, 2018, at Moody Air Force Base, Ga. Approximately 2,000 Airmen executed self-aid and buddy care, security and chemical attack avoidance missions under duress in a simulated chemical warfare environment. Testing and enhancing their operational readiness, this prepared the 23d Wing for the upcoming Phase II exercise during Nov. 5-8, 2018, which will be conducted for the first time in seven years. (U.S. Air Force photo by Airman Taryn Butler)