Possible explanations the Radar displays. We have GPS satillites that we use for positioning. Someone is apparently screwing with these to cause naval vessels to collide (apparently. Do we still have Russian Trawlers or Chinese fishing boats following our fleets? Where do we get the chips from? Taiwan? Any backdoors for the CCP? Might have something to do with them.
Russian computer, US computer, all made in Taiwan!
Visual sightings might be the result of Skunk Works dark projects, or, Foreign nation actors. I would go with Terrestrial origin explanations before ET. Then again, they might already be here....
(Baldwin....Creepy before....even creepier now....)
No, nothing so melodramatic. They are simply secret weapons, going all the way back to aeronautical developments in WW2. Read the book “Intercept UFO” by Renato Vesco to come up to speed on this prosaic but significant technology.
https://www.amazon.com/Intercept-UFO-Renato-Vesco/dp/B0006WI572