u.s. doping charges were dropped against him. >> gretchin: looking at niagara falls. high walker is getting ready to take his career to new heights. he will attempt to cross the falls today. it is 170 feet off of the ground. he will only have a small tether to keep him safe. he is known as flying malindas . his great grandfather died when he fell from a wire in 1948. >> i think of lloyd bridges. made for tv movie of the walindas. he fell to his death. you remember lloyd bridges.