In a Freedom of Information Act request response, the Navy told government transparency site The Black Vault that any public dissemination of new UFO videos “will harm national security as it may provide adversaries valuable information regarding Department of Defense/Navy operations, vulnerabilities, and/or capabilities. No portions of the videos can be segregated for release.”
The Black Vault was seeking all videos “with the designation of ‘unidentified aerial phenomena.’” This is an interesting response from the Navy because, often, military agencies will issue a so-called GLOMAR response, where they neither confirm nor deny that the records (in this case videos) exist, and refuse to say anything more. In this response, the Navy is admitting that it has more videos, and also gives a rationale for releasing three previous UFO videos.
— Read on www.vice.com/en/article/4axn8p/navy-says-all-ufo-videos-classified-releasing-them-will-harm-national-security