Of all the people who claim to have had direct contact with a non-human intelligence, regardless of the human perception paradigm through which they interpreted that experience, the most famous was undoubtedly Saul of Tarsus, better known as the apostle Paul, who went on to become perhaps the most important figure in the creation of one of the world's great religions.
In the New Testament, Acts 9 tells the story of Paul's experience as a third-person narrative:
And as he journeyed, it came to pass that he drew nigh unto Damascus: and suddenly there shone round about him a light out of heaven: and he fell upon the earth, and heard a voice saying unto him, Saul, Saul, why persecutest thou me? And he said, Who art thou, Lord? And he said, I am Jesus whom thou persecutest: but rise, and enter into the city, and it shall be told thee what thou must do. And the men that journeyed with him stood speechless, hearing the voice, but beholding no man. And Saul arose from the earth; and when his eyes were opened, he saw nothing; and they led him by the hand, and brought him into Damascus. And he was three days without sight, and did neither eat nor drink.
If someone was to describe such as experience today, he or she would probably be sent along to a psychiatrist and placed on some sort of medication, particularly if they were to choose a different way of explaining the experience... as an encounter with an extraterrestrial intelligence, for example.
And yet try to get elected President of the United States without affirming your belief in the non-human intelligence that Saul supposedly encountered on the road to Damascus two thousand years ago.
It won't happen.
The question that needs to be asked is: why does Saul / Paul remain a foundational figure of faith for over a billion people, treated with respect even by people who don't believe the supernatural explanation for his experience, while modern UFO contactees receive almost nothing but scorn, even from within the ranks of "serious" UFO researchers?
When one considers the nature of "contact" throughout human history, what one really sees are distinctions that may have been drawn without a real difference. Perhaps the central narrative is the same, whether "contact" happens on the road to Damascus, or the road to Portsmouth, New Hampshire, and whether the non-human intelligence presents itself as the son of God, or the pilot of a spaceship from Zeta Reticuli.