Nik Wallenda Traverses Niagara Falls
"It's all about the concentration...' he said.
Niagara Falls High Wire Walk: Nik Wallenda Achieves Lifelong Dream
Nik Wallenda nears the middle of his tightrope walk over Niagara Falls as seen from Niagara Falls, Ontario, on Friday, June 15, 2012. Wallenda has finished his attempt to become the first person to walk on a tightrope 1,800 feet across the mist-fogged brink of roaring Niagara Falls. (Aaron Vincent Elkaim, The Canadian Press/AP Photo)
