FILE - This June 23, 2013 file photo released by Discovery shows Nik Wallenda walking across the Little Colorado River Gorge on the Navajo Nation near Cameron, Ariz., for Discovery Channel's "Skywire ... more 
FILE - This June 23, 2013 file photo released by Discovery shows Nik Wallenda walking across the Little Colorado River Gorge on the Navajo Nation near Cameron, Ariz., for Discovery Channel's "Skywire Live With Nik Wallenda." Wallenda is taking his tightrope to Chicago for a high-wire walk to be televised this fall on Discovery, part of the network's strategy to entice viewers with live events. Wallenda's walk across the Grand Canyon last year reached more than 10 million viewers live on Discovery. His encore will probably take place in November, Discovery said on Thursday, April 3, 2014. (AP Photo/Discovery, Tiffany Brown, File) less 
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Associated Press | Photo By Discovery, Tiffany Brown, File
Thu, Apr 3, 2014 1:15 PM EDT