Hard work
28th Bomb Wing personnel and dependents swim during the first part of a triathlon at Ellsworth Air Force Base, S.D., Aug. 30, 2007. The triathlon is a three part race consisting of a 1/4 mile swim, a 9 mile bike ride, and a 1 1/2 mile run. (U.S. Air Force photo by SSgt Michael B. Keller)