How Insane Are These Guys? Answer - TOTALLY!

All I can say is, "Balls the size of church bells!" How frikkin' loony do you have to be to pull off some shit like this? Personally, I'd have to be so dickered I'd probably crash into the rock wall with my alcohol-fused testicles exploding all over the place. Do these wingsuit people die all the time or what? They must, right?