TODAY | May 21, 2012
>> daring world record attempt. in 1960 , u.s. air force captain joe kitinger made history free-falling from 102,800 feet. he set several records, including the highest manned balloon ascent, longest free-fall and at mach 0.9 the fastest fall by a human through the atmosphere. felix baumgartner is looking to challenge those records with kitinger's help. retired colonel kitinger. felix is going to do a test jump at 90,000 feet. did you do a test on your way up to 102?
>> yes, sir. we did two jumps before i made my last jump. the reason is making it as safe as we can make it.
>> felix you have already jumped from about 72,000. your next jump will be 90,000. you're wearing a pressure suit like this. what are you going up against? what are the conditions up there that you're falling through?
>> well, this is a very hostile environment. you know. there's no air left. if you go higher than 65,000 feet that's the reason why you wear the pressure suit . and it's pretty cold up there.
>> this may seem like a silly question but whether you're jumping from 30,000 feet or 120,000, aren't the physics all the same?
>> no, they're not. at 65,000 feet blood boils. and without a pressure suit , you die very quickly. so, there's a big difference between 30,000 foot and 100,000 feet. it's because of the pressure.
>> and felix , very quickly, you're going to be going supersonic, at least that's your hope.
>> at that point. i thought there's such a thing at terminal velocity . do you have to put your body in a shape to go that fast?
>> you have to be in shape to go from that at tud. and we hopefully break speed of sound at that altitude. that's what science is telling us.
>> you're going to try perhaps this summer, right?
>> good luck to you. felix , thanks so much for being on. we'll be back with our celebrity apprentice winner.