 And we know there's a lot of water in various parts of the planet, but you've got to dip down into the ground, sometimes fairly deep to get it or go up to the poles. So there's just a lot of homework to do between worrying about making the people safe and what you're going to be able to do when you get there to survive. They're going to have to pre-locate a bunch of stuff forward in advance, you know, cargo, food supplies, oxygen, that kind of stuff.