Senior Airman Jade Starmer, 20th Component Maintenance Squadron aircraft fuel system technician, evaluates a fuel leak on an F-16 Fighting Falcon at Shaw Air Force Base, May 15, 2013. When the fuels system malfunctions the F-16s can have problems with the aircraft’s balance, sustaining the engine and preventing fuel from rolling to the engine. (U.S. Air Force photo by Airman 1st Class Krystal M. Jeffers/Released)