If you do something wrong, it's game over,

so the stakes are very high.

To keep everyone safe, we practice routinely

emergency procedures.

I think the biggest emergency is

is loss of depress, or depressurization.

If something's coming at you and hits the Space Station

then that's gonna cause a breach.

And it can be something as small as two centimeters

in diameter that could do a lot of damage.

Everyone would go to their respective vehicle

and close the hatches because initially, if it's

very fast, you only have so much time

to get in that vehicle safely

and be ready to go home.

Another situation we train for is

fire.

If a fire alarm goes off

on our computer screen you would see

the actual module where the smoke detectors

think you're seeing a fire.

And then you would actually physically go there

to see if you actually have identified smoke,

or flames, or anything coming out.

And the solar flare, the sun kind of burps

every so often, and sends out high energy particles

from the sun.

The dangers around solar flares are that you can

accumulate too much radiation in your body.

If there's a solar flare, all of the astronauts float

up into the doghouse, we call it

that has a ton of water bags

surrounding it.

And the water will absorb and keep the radiation

from coming into our bodies.

And we can just wait until

Houston gives us the call to say everything's clear.

As astronauts, you're trained to not be alarmed

by things.

You're trained to go into a mode of

how will I save the day,

how will I fix this,

how will I do all the steps required

to make sure that, you know, we come home safely?

(gentle music)