Grand Canyon tightrope walk: What was that huge pole for

Daredevil Nik Wallenda prepares to walk across Niagara Falls

Grand Canyon tightrope feat – DW – 06/24/2013

VIDEO Nik Wallenda tightropes the Grand Canyon

Tightrope walking - Wikipedia

Reinvention with The Flying Wallendas

Nik Wallenda's Tightrope Walk Brings Flurry of Hollywood Reactions - TheWrap

VIDEO] Nik Wallenda crosses gorge near Grand Canyon, kisses ground

High-wire artist Nik Wallenda walks across canyon, but maybe not Grand, US news

Wallenda walks fine line high, high above river gorge - CNN