Maj. Brent Waldman, 628th Medical Group Dental Clinic general dentist, uses a mirror to examine a root canal performed on Military Working Dog Shark, 628th Security Forces Squadron, Feb. 20, 2013, at the Veterinary Clinic at Joint Base Charleston – Air Base, S.C. Waldman has been a general dentist at JB Charleston and performs dental operations on MWD’s when they are needed. (U.S. Air Force photo/ Senior Airman Dennis Sloan)