'Out there' is not somewhere you want to be. If you're outside without a suit, you're dead. [ Internal shrug emoji. ] If you're in here, and there's a hull breech, or if you're working somewhere in a suit and it ends up with a hole, you'll have between ten and twenty seconds to try and get to safety. The first thing you want to do is exhale, which I know feels counter-intuitive, but if you hold your breath, the pressure change is going to collapse your lungs and kill you instantly.

[ FUN REAL LIFE FACTS. ]

It'll get hot before it gets cold, and the moisture in your mouth and eyes will start to hurt, because you're being exposed to the unfiltered radiation bouncing around in what makes up 'space'. So you exhale, and you get your suit, or you cover the patch, and you move your ass as fast as possible while staying calm and trying not to inhale.