Can someone help me with static camera orientation?

[Araqiel]

I'm aware of how to move and rotate the cameras using the numpad in the 3D view, but for some reason they resume their original facing when I go to fly the mission. They show fine when using the 3D view in the map, but I cannot for the life of me figure out why they're back facing the way they were when first dropped into the map in the actual mission. This is getting quite frustrating now, so any help is much appreciated.