we had what you call microbursts or wind shears that just come out of nowhere. a sudden wind that just fouled everything up that morning. >> a spectator on the ground captures the moment when the smokey balloon is driven off course by a 60-mile-an-hour blast of wind. >> there's smokey up there. >> despite bill's desperate efforts, there's no way to avoid a 700-foot radio transmission tower. >> my first thought was to get over it. i had no option except to go up. can't steer a balloon. >> bill fires his burners past their safety limit, trying in vain to fight the wind, but he can't rise fast enough to clear the tower. >> oh, he hit the tower. he's on the tower. >> when we hit the tower, the balloon exploded. virtually. and it was like hearing an amplified scream of a mad woman