 Sure. So a lot of it is where those limits are, to know if you're getting too far outside of the safe zones in the cold where you need to dial back. So a lot of cold exposure with a buddy that way to where you're, you know, if you're getting yourself into a limit where you can no longer move your fingers, that you have someone there to kind of help you get gear, those sorts of things. And, yeah, there's just a lot of different components in that.