Staff Sgt. Erik Smith, a 822nd Base Defense Squadron military working dog handler, holds down MWD, Celo, while Army Capt. (Dr.) Allison Brekke, the 23rd Aerospace Medicine Squadron officer in charge of veterinary services, listens for Celo’s heartbeat before surgery July 16, 2015, at Moody Air Force Base, Ga. Breeke inspected the working dog to ensure there would be no complications before beginning surgery. (U.S. Air Force photo/Airman 1st Class Dillian Bamman)