Much more of a 'WTF?' GQ than a 'we're under attack' GQ.
Well in CIC if I saw the the thing hovering I would assume my Radar wasn’t reading the target and I have a computer problem.
I would have assumed it had dropped down on the deck and was coming right at me.
These systems have limitations and are buggy. When they work they work extremely well but you never know when you have a ghost in the machine.