ONDORKHAAN CITY, Mongolia -- Capt. Ross Yost holds up a patient's tooth after removal July 21, 2011, during Operation Pacific Angel 11-4 in Mongolia. By the end of the operation, more than 600 dental patients were cared for by the dental team. Captain Yost, a general dentist, is assigned to the 354th Medical Operation Squadron at Eielson Air Force Base, Alaska. (Courtesy photo)