I have been thinking once again about the possibility of open contact. It almost happened, as I understand it, in late eighties and early nineties, but was stopped when armed NATO fighters rose over Belgium each time an appearance took place. Once on the ground, there was a concern that the visitors involved would be attacked. I had some involvement in this situation, but I lost out, obviously.
Now, the possibility exists again, and once again the US Air Force is sending up heavily armed fighter jets when even the most quixotic formation appears in the sky over this country, and the same would undoubtedly be true over Europe, Australia, Canada or Japan, all places of interest for this to first occur.