Airman 1st Class Justin Smith, 100th Logistics Readiness Squadron Fuels Distribution journeyman from Batesville, Miss., monitors the flow of fuel from an R-11 refueling truck June 25, 2013, on RAF Mildenhall, England. An R-11 refueling truck is used to transport 30,000 pounds or less of Jet Propulsion grade 8 fuel to aircraft, and is essential to keeping aircraft fueled and ready to carry out the mission. (U.S. Air Force photo by Airman 1st Class Preston Webb/Released)