A general comment on UFO's: they have been seen for a long time. Apparent sightings go back centuries and longer if one interprets ancient accounts as being what we call modern UFO's. This is not new. And there have been times and places on earth where sightings have increased and then disappeared for years. Dr Vallee in Aanatomy of a Phenomenon detailed these 'flaps' as they are often called now. He even postulated that a 'reinforcement schedule' could exist by some unknown intelligence that is manipulating the UFO events. He called it a Control System Hypothesis. He speculated that it might even try to control (influence) religious, societal, and scientific development. The agenda being to coax mankind into an evolutionary path according to the unknown agenda of the intelligence causing the UFO phenomena to appear.
That's quite a lot to hypothesize and think about. Knowing how vast, complex , and varied the Universe is ,such a thing is possible, but we have nothing to show that this hypothesis is correct. It is interesting that once again there is a 'buzz' in the media and society about UFOS, which we now are calling UAPS. There were some 'flaps' in the 60's and 70's ,,,quieter in the 80's and 90's and now more active in the middle to late 2000's. Is this another attempt at 'reinforcement'?
If 'aliens' have been here since Roswell (or even much longer) one would think they know just about all they need to know about us by now... so why play chicken with military aircfraft and buzz various areas and allow themselves to be easily seen? And then just vanish and fly away? Again this is not really new. Similar 'flaps' have happened many years ago in the past and many were known to the public then. So what is really going on here?