For me, the disclosure of UFO's as being real is just matter of time. It's not a matter of any Mayan calendar or galactic alignment. It's simply the eventual outcome of increasing and increasingly bold UFO observations. At some point, they become ordinary, mundane , they interfere with air traffic and people see them as an annoyance that pop up in the background of countless photographs! It doesn't have to be 'The Day The Earth Stood Still' on the White House lawn......yet.
As sightings keep increasing, we will also get a steady escalation of authority that testifies to their reality. Today, it might be the Defense Minister of a 3rd world nation like Iran, tomorrow it will be a Prime Minister. Little by little....
There is a great unstated assumption that underlies Christianity. The philosophers of the Enlightenment knew about it. Christianity tends to fall apart unless we are alone as physical beings in the universe. Otherwise, what happens to the Ransom and Adam's sin? And vindicating God against Satan's accusations? Don't the "Greys" need Jesus?
I imagine that the Watchtower will simply talk about 'lying signs and wonders' from the demons and then just selfishly hold on to their thralls for as long as they can. Witness kids will catch on, though - they were brought up on StarWars and more. Years ago, a poster named "Prominent Bethelite" claimed that the WTS had a plan tucked away for just this scenario.
It's a fascinating time to be alive. I truly think we are moving by 'baby steps' into admitting that extraterrestrials exist. President Obama replied, "I can neither confirm nor deny" when asked about aliens recently. Will it really be many years before an American President drops the denial?