ALTUS AIR FORCE BASE, Okla. -- Tech. Sgt. T.J. Sinclair, 54th Air Refueling Squadron flight training instructor, runs laps around the basketball court during the core fitness class May 22. The fast-paced class was established by the Health and Wellness Center staff to help improve core strength and overall fitness. Sergeant Sinclair attends the class as part of his training regimen, preparing for his annual fitness test. (U.S. Air Force photo/Kenneth A. Scarle)