U.S. Air Force Maj. Scott Seago, endodontics chief assigned to the 633rd Dental Squadron, pulls out the necessary tools to perform a root canal on a 633rd Security Forces Squadron military working dog at the veterinary clinic at Langley Air Force Base, Va., Jan. 27, 2016. The average length of the root of a dog’s tooth is between three and five times the length of a human’s; therefore, the dental clinic had to order special equipment for the procedure. (U.S. Air Force photo by Staff Sgt. Teresa J. Cleveland)