they position the chopper and this time, deputy don mcadoo makes the drop. has an additional challenge to deal with. >> my pilot was a little bit fatigued. my systems operator, kevin, who is standing on the skid running the hoist and basically putting us into position, he's been at it for about an hour. the winds have really kicked up. >> the chopper's whirling blades add to the turbulence. >> wow. it is pretty scary in itself, that wind that's also being created. >> i'm like a yo-yo. i'm at the mercy of my systems operator who is lowering and raising the cable and also the helicopter pilot who has to hold that helicopter in steady position in those winds. >> all the time the rescue's going on, other rafters keep whooshing merrily by. >> you see these people kayaking by, rafting by, and they appear oblivious to what's going on. >> mcadoo is worried. time may be running out for the rafters. >> had these people lost consciousness, fallen off into the river, we would have had a much more perilous mission that we might not have been able to save them. >> finally