on a narrow cord more than 3,000 feet above a norwegian fjord. he's attacking the world's highest slack line walk when suddenly -- it's august 3, 2006. christian is atop a mountain in southwest norway. he's strung the nylon cord himself, testing each screw to make sure it's securely fastened and then edging along the wire, checking it inch by inch. his only protection if he falls during the attempt will be a safety harness attached to the line. if a cord or screws break christian will plunge to his death. >> translator: there are a lot of things that can go wrong. for example, you could have something sharp in your pocket that could cut the line. >> once christian has gone through the safety check, he begins psyching himself up. music gets him in the zone.