Nik Wallenda sets world record for longest tightrope walk at

Nik Wallenda makes longest wire walk ever

Nik Wallenda's Biggest Stunt Yet

Nik Wallenda's ratings fall for Chicago wirewalk

Discovery to Air Grand Canyon Tightrope Crossing Live

Daredevil Nik Wallenda to walk over a volcano

Nik Wallenda breaks records with TWO death-defying tightrope walks

First person to walk tightrope across Niagara Falls: Nik Wallenda

High hopes for Nik Wallenda's record-breaking wire walk

Skywalking Shoes Skyscraper Live

Breaks 2 World Records In Walk Between Chicago Skyscrapers

Beneath Nik Wallenda's Tightrope, Discovery and NBC News Face

Nik Wallenda and the family tradition of death-defying feats