I guess when Trump changes from Build that Wall to keep the illegal aliens out to ‘Build that Dome’ to keep the other aliens out, we’ll know the truth.
I don’t believe aliens have ‘visited’ us. All the UFO and Area 51 secrets are related to top secret technology from other countries and our own, imo.
Given that's where we test stuff I agree.
What about Dr. John Mack’s work with abductees?
That doesn’t explain all the historical reports of ‘strange things in the sky’ that predate all of our technology.