In this Jan. 25, 2017, photo, face transplant recipient Andy Sandness walks to the Saint Marys Hospital campus at Mayo Clinic in Rochester, Min. Sandness can pinpoint the day he looked normal. About three months after the procedure, he was in an elevator with a little boy who glanced at him, then turned to his mother without appearing scared or saying anything. "I knew then," he says, "that the surgery was a success." (AP Photo/Charlie Neibergall)