Wallenda to be tethered to Niagara Falls tightrope

FILE- In this May 16, 2012 file photo, Nik Wallenda performs a walk on a tightrope in the rain during training for his walk over Niagara Falls in Niagara Falls, N.Y. Wallenda says Monday, May 21, that ABC is adamant about making him wear the safety device out of concern for viewers who tune in to the network's three-hour, prime-time special on June 15. (AP Photo/David Duprey, File)