Is There a Highly Advanced Civilization?

Professor garry nolan believes there is a highly advanced civilization that is intelligent, it's not human, and it's real. Haver listened to what garry told me about the 'wilson davis memo' The document purportedly records eric davis's conversation with admiral tom wilson - who at the time was the immediate past director of the defense intelligence agency. It allegedly describes a u f o crash retrieval program being concealed inside us. Government and private corporate aero space are believed to be behind this conspiracy.