mountain, but the chopper holds steady, lifting two of the most critically injured patients, chris kern and thomas hillman the mountain. >> the prettiest sight i ever saw was seeing chris going up in the litter and being flown off. weight of the world off my shoulders. >> now jeremiah moffett is the only injured patient left on the slope. but that national guard blackhawk needs to refuel. >> you see also nighing around the summit over the top of the summit is another military helicopter. >> waiting in the wings an air force pave hawk, a little heavier than the blackhawk the national guard used, but the pilots believe they have enough power to perform a rescue, even at that altitude. >> this is tricky flying when you're that close to the edge of the mountain. >> as the chopper approaches, all seems well. the pilot eases it in perfectly, lowering a parajumper with a litter onto the slope. next as the pave hawk huddles close to the icy surface, the jumper hooks jeremiah's litter to the helicopter's heavy metal cable. now every second is crucial. and then, suddenly, a change in the wind. >> there we are, talk