“reliable witness” here are pilots, many years after the events took place. Sure, I expect them to be good at flying, and identifying enemy aircraft while flying, but they also make mistakes. Do you know how many doctors have falsely identified things in a body? They’re trained a lot more, and a body is significantly more consistent than literally everything in the air. From what I’ve seen, basically all of the recordings are consistent with an object moving slowly in the air closer than what the pilot thinks. This makes small movements, or just the aircraft movements, appear faster. Hologram technology is not a logical explanation.