Senior Airman Douglas Osman, 521st Air Mobility Operations Group jet engine mechanic, regulates the flow of fuel through the tanks in the wings of a C-5 Galaxy on Sept. 13, 2010, at Al Asad Air Base, Iraq. Airman Osman must balance out the wings fuel within 8,000 lbs of each other to ensure the C-5 flies safely. (U.S. Air Force Photo/Senior Airman Perry Aston)