Many people, especially UFO skeptics have often asked the question
that if UFOs are real, then why don't they land on the whitehouse lawn?
Perhaps they did!
Unbeknownst to many others, when they (USAF) closed the book on
continued investigations, i.e. Project Gridge & Project Bluebook, they
only intended to close the book on us! therefore any continued
investigations were conducted in secret and thus explains why we have
been continued to be kept outside of any official disclosure.