Jeb is the the current best at this right now & as slaker said its a long process to get there.
1) Skydive ---> 200+ jumps from airplane before you can base jump
2) Basejump ---> sugjested 50-100 base jumps before you put on wing suit
3) Wingsuit ---> 'normal' people enjoy turning their 20-30 second base jump into the 45-60 second jump in a suit.. once you get 'bored' with that you start trying to fly closer to objects
I am pretty sure this is not the first time Jeb has crashed either.. this flight starts as usual his usual 'Jeb flys in & grabs the balloon floating 8 feet off the ground" type deal but he just sniped his shins/knees after grabbin his target.
Crazy shit & thank god he is ok because obviously this could end a lot worse.. watch some of his other vids too they are good stuff.
Thing is I know this guy has a super model italian girlfriend but I have to wonder how good the sex is when you do this kind of adrenaline rush stuff
