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"Skywire Live With Nik Wallenda"

Nik Wallenda looks out at the Grand Canyon.

'Skywire Live With Nik Wallenda'

It will be one of the most daring and captivating live events in history -- Nik Wallenda, known as "The King of the High Wire," will traverse the majestic Grand Canyon, without using a harness.  On Sunday, June 23, beginning at 8 PM ET, Discovery Channel will capture the nail-biting, play-by-play live event in "Skywire Live With Nik Wallenda."