U.S. Air Force Lt. Col. Elliot Pinero, 633rd Surgical Operations Squadron Diagnostics Imaging Flight commander, reviews magnetic resonance imaging scans at Langley Air Force Base, Va., Nov. 14, 2014. MRIs are used on patients for medical diagnosis, staging of disease and for follow-up, without exposure to ionizing radiation. (U.S. Air Force photo by Airman 1st Class Areca T. Wilson/Released)