Nik Wallenda walks across Niagara Falls on a wire, as seen from Niagara Falls, N.Y., Friday, June 15, 2012. Wallenda battled brisk winds and thick mist Friday to make history, becoming the first person to walk across Niagara Falls on a tightrope.
Credit: (AP Photo/David Duprey)
Related: Full coverage of Nik Wallenda's walk over the Falls