120711-F-EO463-057
Senior Airman Jeffrey Gomez, 8th Medical Operations Squadron, tests water samples after a simulated chemical attack during exercise Beverly Midnight 12-03 on Kunsan Air Base, Republic of Korea, July 11, 2012. Water samples are taken and tested from various locations on base, such as the water treatment center, to ensure that the water has not been contaminated during a chemical attack. (U.S. Air Force photo/Staff Sgt. Jonathan Fowler)