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Airmen 1st Class Rosa Lopez, left, legal office, and Alex Potter, 81 Contracting Squadron, prepare a liquid detection network for use during a chemical attack during a field exercise Aug. 14 in preparation for Keesler's upcoming operational readiness inspection. The exercise tested the ability of Airmen to survive and operate under hostile circumstances, as well as self-aid and buddy care techniques. (U.S. Air Force photo by Kemberly Groue)