U.S. Air Force Airman 1st Class Codie Thibodaux, a fuels technician with the 8th Logistics Readiness Squadron, takes the first step in testing a fuels separator at Kunsan Air Base, Republic of Korea, Sept. 4, 2012. Contaminants and water are some of the things fuel is tested for prior to being issued out. (U.S. Air Force photo by Senior Airman Brigitte N. Brantley/Released)