Nik Wallenda preps for Niagara Falls stunt

<div class="meta image-caption"><div class="origin-logo origin-image none"><span>none</span></div><span class="caption-text">On June 15th, daredevil Nik Wallenda will walk approximately 1,550 feet on a tightrope wire, suspended 173 feet above the raging waters of Niagara Falls, between the United States and Canadian border - an unprecedented feat that has been banned for over 125 years. Wallenda&#39;s long-planned event will air live during a night of MEGASTUNTS specials starting with &#34;Countdown to Niagara: The Greatest Megastunts of All Time&#34; &#40;8-9pm, ET&#41; and will culminate with Wallenda&#39;s walk on &#34;Megastunts: Highwire Over Niagara Falls - Live!&#34; &#40;9-11pm, ET&#41; on FRIDAY, JUNE 15.  (American Broadcasting Companies, Inc.)</span></div>
June 15, 2012 8:01:10 PM PDT