Wallenda walks over Niagara Falls

Nik Wallenda walks over Niagara Falls on a tightrope in Niagara Falls, Ontario, on Friday, June 15, 2012. Wallenda became the first person to walk on a tightrope 1,800 feet across the mist-fogged brink of roaring Niagara Falls. The seventh-generation member of the famed Flying Wallendas had long dreamed of pulling off the stunt, never before attempted.