The Declassification conspiracy theory proposes that Big governments do not release all of the necessary documents needed to make a final third-party analysis for an unsolved event.
In the United States, declassified documents can often be obtained by request, through the Freedom of Information Act. However, measures have known to be taken by US government agencies to withhold or further delay documents from being released on certain sensitive subjects.
The declassification of documents also makes Big government look transparent, in order to woo interested parties of the given subject—fizzling-out the matter as “case closed”. An example of this, was the releasing of UFO, paranormal, and Stargate Project documents from both the FBI and CIA agencies c. 2010. The outdated releases make out the UFO phenomenon subject as something that was researched but concluded to be “inconclusive”, “false”, or “hoaxery”.