The Pentagon is about to release a report from a previously little known department "The UAP Task Force". It is using the British military title "Unidentified Aerial Phenomena" (UAP) for these incidents, probably because the old title "UFO" now carries so much baggage.
It is interesting because over the past few years the US Department of Defence has released some videos, mainly from navy pilots, showing these UAPs in action. There are also a few from commercial aircraft. Nobody knows what these things are, but they are real, and evidence suggests that they were not flocks of birds, a balloon, swamp gases or Lenticular clouds - they look like flying saucers. Those were the old descriptions to pass them off but don't work any more. No, they were craft of some sort and they fly and manoeuvre at incredible speeds.
The known laws of physics tend to point to them not being ET or his or her mates, but someone, somewhere, is making them. Somebody is spooked by them.