U.S. Air Force Lt. Col. (Dr.) Christian Lyons, 4th Medical Operations Squadron commander, stretches the neck of a patient at the Physical Therapy clinic on Seymour Johnson Air Force Base, N.C., Oct. 25, 2012. Lyons has been recognized twice by the Association of Military Surgeons of the United States for his case studies on patients with spinal complications. (U.S. Air Force photo/Senior Airman Gino Reyes/Released)