I watch the Red bull events whenever I can.
It's awesome flying.
Those guys are on the limits with so little margin to work with.
As for some other you tube stuff - a lot is edited/manipulated.
I saw a killer whale attack last week and the clue to it being a fake is the speed and way that the "victim" disappeared I replayed it several timeas and the male victin just disappears as if by magic (or editing!)
