At 6 a.m. on Sept. 23, 2010, Lt. Col. Patrick Castle lined up on the James Gym track for his 1 1/2 mile run portion of the Air Force's annual fitness test, having just completed a marathon 11 days previously. Normally this is the time period for athletes to recover and slowly rebuild their muscles, not push them further in a sprint to break their own speed record. But this is exactly what Colonel Castle set out to do. Never mind that he could seemingly easily jog the required 9 minute and 48 second pace needed to get the maximum points for men in his age group; his best time is 8:12. Since testing began under the new Air Force standards in July, the evaluators say his is the fastest time on base ... so far. (U.S. Air Force Photo/Staff Sgt. Brian Valencia)