It was the Korean War. Lee Geumsum was fleeing on foot with her husband, little son, and baby girl in her arms. She stopped for a few minutes to nurse her baby. But when she looked up, the other half of her family was gone. She never found them again. She's now an old lady of 91, about to be briefly reunited with the son she lost for 67 years. She made it to South Korea: he didn't.