Master Sgt. Tito Carrillo, 433rd Aeromedical Evacuation Squadron flight medic, sprints down the straight away at the Warhawk track Sept. 1, 2016 at Joint Base San Antonio-Lackland, Texas. Carrillo was selected to run on the 2016 Air Force Reserve Command's Challenge Team. The team is comprised of 10 marathon runners who will compete with other Air Force major commands in the half and full marathon at the 20th annual Air Force Marathon Sept. 17, 2016 at Wright-Patterson Air Force Base, Ohio. (U.S. Air Force photo by Benjamin Faske)