Capt Edward Rupplet wrote a book entitled Report on UFOs in 1952. Many cases of encounters with UFOS and military aircraft were mentioned. To date not one of these major cases has been declassified or found or acknowledged. Some of stories and quotes have been declassified including the famous Twining memo in which the Captain quote from.
What happened to those documents that were labelled "insufficient data" and "CP" (Crack Pot)(those that came into close contact with UFOs and their occupants)? They did a disappearing act.
If these records from the 1950s are still classified what chance do we have of seeing records which are current?
I was advised some time ago of a warehouse just out side Washington DC which stores vast amounts of classified material some beyond the Top Secret classification, maybe that is where they are stored?