I agree logic is out the window in this thread but that's not a good thing.Logic is out the window if the object is truly alien. You don’t think Aliens would be smart enough to develop a highly sophisticated auto pilot that can match the movements of other crafts?
Applying our understanding of physics on ufos is like a medieval scholar trying to understand quantum computing
"Logic is out the window" is a cop-out. Once you stake your position as the illogical one then there's no benefit to further discussion. You're forced to assume aliens first to even make that claim, and then since you've already assumed aliens and assumed that logic is impossible, there's nowhere further to go. Why would a craft make an autopilot that would mimic the motions of the thing chasing it? Aren't you supposed to do the opposite, aren't you supposed to counter the motions of the thing chasing you? It would make zero sense.
The obvious answer is that it was a parallax or autokinetic optical illusion, where the object he was viewing was much further away than he believed it to be and thus he interpreted his own movements as movements of the object against the background. He was primed to be thinking about UFOs cause UFO hysteria had been building for a few days among the crew and this was the result, same as many of the other major sightings have followed the same sort of priming. But y'all don't want to take the obvious answer.