BAGRAM AIR BASE, Afghanistan -- Airman 1st Class Omar Foster adjusts the throttle on an R-11 refueling vehicle. The R-11 can pump up to 600 gallons of jet fuel per minute. Airman Foster is a fuels technician in the 455th Expeditionary Operations Group, and he is deployed from Hurlburt Field, Fla. (U.S. Air Force photo by Master Sgt. Jeff Szczechowski)