He even visited Paul Benowitz.
And in case you don't recall, Benowitz was the victim of a horrible psyop perpetrated by an Air Force counterintelligence agent named Rick Doty.
When Benowitz saw what was probably just frontier terrestrial aerospace technology vertically taking off and landing at Kirtland Air Force Base, Doty convinced him that he was viewing alien craft and basically drove him into psychiatric hospitalization.
But Lear visited Benowitz after Doty did, and reports were that Benowitz was pretty spooked after that meeting.