A U.S. airman, with the Bio-environmental Engineering Flight, 18th Aerospace Medicine Squadron, fills a substance detection tray with a test chemical to identify an unknown substance during an emergency management exercise as part of exercise Beverly High 12-5 on Kadena Air Base, Japan, Aug. 22, 2012. Beverly High is an operational readiness exercise that focuses on responding to real world contingencies. (U.S. Air Force photo by Senior Airman Maeson L. Elleman)