Most (if not all files) taken by fiat-governments come under a rule that means the those government may keep them out of public view for a time-period
of between 30 to 100 years, depending on what each of those documents' reveals.
In this six-part series of videos, you'll see honest witnesses, ignorant debunkers & deceptive shills for fiat-government talk about anti-gravity
vehicles, and other information that's usually kept secret (until former-feds & rare citizens expose it for all of us to see and/or hear):