Senior Master Sgt. Michael Smith, fuels superintendent, and Master Sgt. Wesley Jones, fuels craftsman, from the 419th Logistics Readiness Squadron, mark an area after sighting a simulated unexploded ordinance during an Ability to Survive and Operate inspection held on Hill Air Force Base, Oct. 14, 2017. The ATSO inspection included training on how to conduct sweeps for hazards while in a simulated chemically-contaminated area. (U.S. Air Force photo/Tech. Sgt. Michael McCool)