Airman 1st Class Corrie Smith, 60th Logistics Readiness Squadron fuels distribution technician, stands with an R-11 refueling truck May 22, 2012 in the fuels yard on Travis Air Force Base, Calif. Smith uses the vehicle to bring Jet Propellant-8 from bulk storage facilities to refuel Travis aircraft in her duties. (U.S. Air Force Photo/Staff Sgt. Patrick Harrower)