U.S. Air Force Tech. Sgt. Danielle McAtee, 633rd Surgical Operations Squadron diagnostic imaging core section chief, receives a computed tomography scan at Langley Air Force Base, Va., Nov. 14, 2014. A CT scan is a noninvasive medical examination that uses specialized X-ray equipment to produce cross-sectional images of the body. (U.S. Air Force photo by Airman 1st Class Areca T. Wilson/Released)