A U.S. Air Force dentist performs an examination on a patient at the 633rd Dental Squadron clinic at Langley Air Force Base, Va., July 11, 2013. The squadron is comprised of four flights totaling 25 dentists and 60 ancillary staff that provide a range of services, including general dentistry, prosthodontics, periodontics, orthodontics, endodontics and oral and maxillofacial surgery. (U.S. Air Force photo by Airman 1st Class R. Alex Durbin/Released)