![High wire walker Nik Wallenda balances on a 1,200 foot (366 meter) cable during a practice session in Sarasota, Florida, June 14, 2013. Wallenda is training for his untethered high wire walk High wire walker Nik Wallenda balances on a 1,200 foot (366 meter) cable during a practice session in Sarasota, Florida, June 14, 2013. Wallenda is training for his untethered high wire walk](https://c8.alamy.com/comp/2D09331/high-wire-walker-nik-wallenda-balances-on-a-1200-foot-366-meter-cable-during-a-practice-session-in-sarasota-florida-june-14-2013-wallenda-is-training-for-his-untethered-high-wire-walk-across-the-grand-canyon-scheduled-for-june-23-picture-taken-june-14-2013-reuterssteve-nesius-united-states-tags-entertainment-society-2D09331.jpg)
High wire walker Nik Wallenda balances on a 1,200 foot (366 meter) cable during a practice session in Sarasota, Florida, June 14, 2013. Wallenda is training for his untethered high wire walk
![Nik Wallenda walks across Grand Canyon on 2-inch wire | Extreme sports, Grand canyon, Extreme adventure Nik Wallenda walks across Grand Canyon on 2-inch wire | Extreme sports, Grand canyon, Extreme adventure](https://i.pinimg.com/originals/64/c3/c3/64c3c307a4594521840e7e46cd5aecbb.jpg)
Nik Wallenda walks across Grand Canyon on 2-inch wire | Extreme sports, Grand canyon, Extreme adventure
![Nik Wallenda's Risky Stunt for Discovery Channel Points to TV's Audience Troubles - The New York Times Nik Wallenda's Risky Stunt for Discovery Channel Points to TV's Audience Troubles - The New York Times](https://static01.nyt.com/images/2014/11/01/business/media/01daredevil-pic1/01daredevil-pic1-superJumbo.jpg)
Nik Wallenda's Risky Stunt for Discovery Channel Points to TV's Audience Troubles - The New York Times
![Tightrope Walker Nik Wallenda Successfully Crosses the Grand Canyon Without a Net - Good News Network Tightrope Walker Nik Wallenda Successfully Crosses the Grand Canyon Without a Net - Good News Network](https://www.goodnewsnetwork.org/wp-content/uploads/2013/06/tightrope_Wallenda-NBCvid.jpg)