aileen marty. dr., marty sorted to -- the circumstances.sible shuttered a catastrophic implosion. you talk about with that actually means? obviously, you know, in the last couple of days, when people thought the running out of oxygen, the idea of what that would mean for those on board. an implosion is very, very quick. >> yeah, that's the one good thing about this horrific tragedy. is that when you get an implosion like that, it happens in a fraction of a millisecond. i mean, it's incredibly quick. it takes more than that, it takes about point 25 more than that for the human brain to even realize it's happening. so, these people would have the entire thing would've collapsed before the individuals inside would even realize that there is a problem. they may have heard a little something ahead of time, they've got a little bit of extra nitrogen in their brain. they probably didn't know anything, and then the thing exploded, so. >> that extraordinary. it happens that quickly. i heard you say, i forgot the figure about how fast something implo

aileen marty, who's a retired navy physician who knows well the challenges at hand here.ith us. can you explain the impact of the dwindling oxygen supply, and also, carbon dioxide? >> that's right, and i'm glad you mentioned carbon dioxide, because obviously as they lose oxygen, the carbon dioxide builds up. i don't know if the vessel has the capacity to extract that carbon dioxide, whether that submersible was built with that in mind. we also don't actually know what's going on right now. they may not be alive right now. there may have been a leak in that porthole. it might have been a catastrophic leak, in which case the individuals they may already have drowned, which is horrible. and if they are still alive and we're looking at dwindling octagon, the decrease in oxygen getting to the brain, and that increase in carbon dioxide is a very panicky situation. you feel your world closing in. it is like everything gets more narrow, like it's in a tunnel. and it is a horrific sensation that people get. they sense that they are dying. they cannot believe that they are losing t