Maj. Brent Waldman, 628th Medical Group Dental Clinic general dentist, uses a drill to perform a root canal on Military Working Dog Shark, 628th Security Forces Squadron, Feb. 20, 2013, at the Veterinary Clinic at Joint Base Charleston – Air Base, S.C. Shark was under anesthesia during the root canal and teeth cleaning. Shark works on both the Air Base and Weapons Station at JB Charleston. (U.S. Air Force photo/ Senior Airman Dennis Sloan)