A competitor prepares his bike to start an 18.1-mile ride during a sprint triathlon at Holloman Air Force Base, N.M., Oct. 6. The bike ride was the second of three events, which also included a 3.2-mile run and 700-meter swim. Forty-seven fitness enthusiasts of all ages participated in the event. (U.S. Air Force photo by Senior Airman DeAndre Curtiss/Released)