For years, whistleblowers have publicly alleged that the United States government is withholding what it knows about UFOs (now formally referred to as “unidentified anomalous phenomena” or “UAP”).

Those allegations gained new weight this past May, when the U.S. Department of War began the process of releasing hundreds of declassified documents, images and videos as part of the Presidential Unsealing and Reporting System for UAP Encounters.

These recent disclosures raise an old question: If the U.S. government is officially acknowledging that UAP have been observed, could claims of contact with the non-human intelligence allegedly operating them also be true? To understand what a claim of actual contact would even mean, it helps to start with the framework that first tried to categorize these encounters.