Lt. Col. Jeffrey Medland, 3rd Medical Operations Squadron, Elmendorf Air Force Base, Alaska, pushes himself to the limit for the 100-day million push-up challenge March 29, 2010. In an attempt to improve PT scores and unit camaraderie, 425 Arctic Medics did 1,184,957 push-ups in 100 days. (U. S. Air Force photo/Senior Airman Laura Turner)