A litter of puppies and their mother, Sheba, who befriended U.S. troops stationed in Afghanistan, have been transported to the U.S. The puppies will be adopted by the service members, while Sheba may be trained as a service dog and placed with a veteran in need. Staff Sgt. Edwin Caba and others were elated to see the dogs again. "We just built a bond you can't even describe," he said.