Ed Smart, father of kidnapping survivor Elizabeth Smart, was forced into the public eye in 2002 when his daughter was abducted from her Salt Lake City bedroom in the middle of the night. Back then, Smart used his voice to fight for her miraculous rescue. Now he's sharing his own story. In our exclusive interview, Smart tells "CBS This Morning" co-host Gayle King how difficult it was to come out as gay to his family and friends, and how it's affected his relationship with his children.