TODAY | June 22, 2013
>>> his family has been risking their lives for generations. tomorrow night, nick wallenda will do it again taking on the most daring stunt yet.
>> he will walk across the grand c canyon on a wire the width of two bottle caps.
>> the goal is to make it to the other side.
>> when he sets a goal, he achieves it. he's hung fl a helicopter by his teeth and walked on top of a moving ferris wheel . he risks his life every time he walks on that wire. back in 2008 , a terrifying slip when crossing the wire on foot.
>> oh, my gosh.
>> minutes later, he set a guinness book record for the longest high wire bike ride. another scare when the wheel slipped.
>> don't go backwards, please.
>> tomorrow night, he will attempt to cross the grand canyon on a wire strung 1,500 feet above the ground, about as high as the empire state building . he will walk 1400 feet without a harness or net. death defieing stunts run in the family. they have thrilled families since the 1700s . that makes nick a seventh generation performer.
>> it's important for me to do it the way our family has always done it.
>> it comes with risks. in 1978 his great grandfather died attempting a high wire walk in puerto rico .
>> i want to make sure it's done right.
>> to ensure it never happens again, he relies on a safety team run by his dad, teri.
>> i would be worried sick if i wasn't there.
>> when he steps on the wire tomorrow night, he hopes to carry on a dream and a family legacy.
>> toward the end, i will tear up. i see my kids. i see my wife. i see the smiles on their face and the relief. the exhaustion goes away. it's excitement. we can celebrate.
>> i was commenting. i didn't like watching him stand by the cliff.
>> it's too close to the edge .
>> i can't believe his dad is there. my mom has a hard time when i travel to d.c. call me when you get there. his father watches this. what a responsibility.
>> he should wear a helmet.
>> whatever. i'll let you all think about why that was a stupid comment on my part. anyway.
>> sky wire live with nick wallenda airs on the discovery channel .