Fuel Doctor
EIELSON AIR FORCE BASE, Alaska -- Airman 1st Class Sean McDonagh, 354th Logistic Readiness Squadron fuels laboratory technician, organizes his fuel sampling instruments Oct. 24, 2007, at the POL yard. Making sure the fuel used by the aircraft here at Eielson is always good to go, Airman McDonagh helps assure the process by constantly sampling the fuel lines and also the trucks that distribute it to the aircraft. (U.S. Air Force photo by Airman 1st Class Christopher Griffin)