This all strikes me as "reverse learning." All of this and more was known by the 1960s and 1970s, which I followed at the time. Now, people act like UFOs are a new phenomenon, with new evidence. I've seen scientific papers written on radar image analysis of UFOs, published in technical journals of that time period. Nothing new under the sun. And the military knows nothing. And what the military is concerned about is not discussed today---but it was discussed back when (clusters of UFOs around military vessels and facilities; possible deactivation of fissionable materials). Major Donald Keyhoe even had a concept for luring UFOs into a position for detailed observation. But we have no memory and we don't learn.