Lt. Col. Kevin Riley (left) and Master Sergeant Jerry Goodwin (right) rush to move from level two to level four Mission Oriented Protective Posture gear (MOPP 4) in a two-minute time limit during Ability to Survive and Operate training held July 12. Members of the 315th Airlift Wing here at Charleston Air Force Base, S.C., are undergoing ATSO training in preparation for the upcoming Operational Readiness Inspection. (U.S. Air Force photo by Senior Airman Dani Pacheco)