Tightrope Walker Nik Wallenda on His Televised Grand Canyon Walk, the Risks and What's Next (Video)

There are "a lot of unknowns as far as wind, direction and speed," Wallenda tells THR of his attempt to walk 1,500 feet above the Little Colorado River in a live special airing Sunday on Discovery Channel.

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Posted Fri, Jun 21 2013 10:00 AM by Television
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