When looking at a mission on a map, you sometimes get long red longs coming out of the main big red X with the mission name.  These lines show you where the rogue AI have wandered off to.  The lines point directly to the position of the AI that have gotten separated from the main group.  Why does this happen? The AI is still a bit buggy and they get stuck on rocks and scenery, then they take on a mind of their own and go wandering off.. We can’t explain it, when can only help you understand where you have to look to finish the mission!