 their medical conditions, and they've really got a much clearer picture of what happens to you when you spend a lot of time in that environment. I think I'd get stir-crazy after two days. It's not very big. You know, it looks large when you see it on television, but with all the stuff they store up there and all the equipment bays on the walls and so forth, yeah, I mean, things are much larger at zero-g because, of course, you can stand in any direction and float anywhere you want to go.