Cadets aim to cut KC-135 fuel costs
Cadet 1st Class Daniel Prescott affixes winglets to a model of a KC-135 Stratotanker in an aeronautical engineering lab at the U.S. Air Force Academy, Colo., Nov. 3, 2008. The department's research predicts an 8-percent improvement in fuel efficiency from the winglets, which reduce the effects of drag on the aircraft. (U.S. Air Force photo/John Van Winkle)