corliss rushes to make much-needed practice runs only one day before the event. >> there he is.ow. >> my first practice jump flying over it, looking down going, like, ah, you know, and i opened high, and i come into my landing here, and i slam in. horrible landing. i mean, bad. then all of a sudden it started dawning on me, i just spent the last year and a half getting better. so now i'm going to get totally broken again and have to go through another six months of recovery if i'm lucky. >> stunt day arrive with more bad weather. it's time. didn't fwet the proper train, the proper preparation, and i'm just sitting there, and they're looking at me, and i'm just, like, let's go. i have a guide in the chopper helping me. he is, like, this is when you get up. i'm, like, okay. basically at that point i was just being like, i was so fairfied tears started coming out of my eyes, and all of a sudden i feel him touch my shoulder, and i remember leaving the helicopter. >> corliss is 1,500 feet bottom of the mountain and hurdling towards two cliffs of sheer granite. >> the second i hit it,