Some, maybe. If you are going to sum up "all UFOs", there's just way too much variety in: - Size - Shape (considering that mission profile) - Movement charac

Some, maybe. If you are going to sum up "all UFOs", there's just way too much variety in: - Size - Shape (considering that mission profile) - Movement characteristics - General capabilities - Access to nearby air traffic - Tech being exposed _to_ pilots, e.g. flight envelope capabilities; inter-media transitional capabilities This is the hand-wave problem with UFOs/UAPs. Once you start into details, they're really not a single _thing_ anymore by any rational definition. And this more flexible POV also takes into account the possibility that some _are_ spy drones.