9-year-old boy survives shooting that killed parents, sister at Iowa campground

A 9-year-old boy who was camping at an Iowa park with his parents and 6-year-old sister is the sole survivor of a shooting that killed the rest of his family. One witness saw the little boy standing alone still in his pajamas after his family had been found murdered in their tent. The gunman's body was found nearby with a self-inflicted gunshot wound; the family says it appears the murders were "completely random."