These things are a bit overkill for that, not seen many hyper sonic joy riders around here. They’re hovering about in populated areas to be observed, not to observe.Satellites are good for some types of surveillance but tracking a vehicle in a populated area is much different.
First rule of the time travelers clubTime travel is possible. It's proven by the Mandela Effect. Though I can only point to the superficial reasoning, as any attempt to fully explain the who and why, will only be undone