No Fog?

I've been playing around with the Bravetree Warsparrow pack lately, and with that I am attempting to make a space fighter. But the problem is, when I remove the terrain the fog ends up covering the bottom of my skybox. I have tried to set the fog outside of the view distance so that it wouldn't be covering the bottom of the skybox, but that didn't work out. So I am wondering what it would take to remove the fog from the level so that it would be possible to see the bottom of the skybox?

Thanks in advance for the help.