Wallenda exuberant after wire walk across Niagara Falls

WIRE WALKER: Nik Wallenda walks over Niagara Falls on a tightrope on Friday in Niagara Falls, Ontario. Wallenda has finished his attempt to become the first person to walk on a tightrope 1,800 feet across the brink of roaring Niagara Falls. The seventh-generation member of the famed Flying Wallendas...