Lived to tell. yes, that s me taking the plunge. reporter: you ll notice it s not me. the only plunge i m taking is in an elevator to my office. unlike me, tina landed on her knees. everybody told me it was that letting go that was going to be the hardest part, and it was. reporter: sky jumpers have to suit up and get weighed before they jump. those over 275 pounds need not apply, probably the biggest danger is a pinched private. at 829 feet, sky jump las vegas beats out the mccow sky jump in china. this kid was pretty fearless. many jumpers refused to let go. i m scared. give me two seconds. ....