Chris Hadfield: Let me tell you what we got here. This is
the Sokol suit. It means “falcon”. And this suit protects me against the loss
of pressure in the spaceship. If the spaceship has a leak and all the air
starts leaking out of it, then I would die if I were just wearing regular
clothes. My blood would boil and I wouldn't be able to breathe. So that keeps a
bubble of air around me. I just climb in through a hole. And I'm gonna seal
this hole up, make it nice and tight, and then when I close my visor, I'm
basically inside a small personal pressurized bubble.
Picture that we've had a fire on the space
station. So the atmosphere is really bad. And so we get into the Soyuz and we
close the hatch. If the atmosphere inside the Soyuz is also really smoky, then
you would have to get into this thing as soon as you could 'cause you wouldn't
be breathing very well. And then eventually you're gonna be able to plug
yourself into this oxygen supply so that you have pure oxygen to breathe and
that takes, we think, about twenty minutes – half and hour from detection of
problem to where you're plugged into the Soyuz's oxygen and safely protected
from the smoke.
You want to do this part really well because
this is the seal that keeps you alive. And on the ground we have a big team of
people that help us do this but of course, when you get to orbit, and before
you come home from space, you've got to do this all yourself. So you don't want
to mess this part up. And one of the very first crews that went to space from
Russia in the Soyuz, they had a leak and they weren't wearing a suit like this.
They didn't think they'd needed it back then. They opened up the hatch and the
three guys inside were dead. And so ever since then we've worn these suits and
we want to do this part right. You don't want to be one of those guys.