UFO expert “abducted” possibly by aliens near Area 51
An exceptionally grave national security crisis, although I am unsure whether “Area 51” actually refers to Roswell, New Mexico or Groom Lake, Nevada
The President Executive Order 13526
Classified National Security Information December 29, 2009 Part 1 - Original Classification Part 2 - Derivative Classification Part 3 - Declassification and Downgrading Part 4 - Safeguarding Part 5 - Implementation and Review Part 6- General Provisions This order prescribes a uniform system for classifying, safeguarding, and declassifying national security information, including information relating to defense against transnational terrorism. Our democratic principles require that the American people be informed of the activities of their Government.

§1.2 ¶(a)(1) ‘‘Top Secret’’ shall be applied to information, the unauthorized disclosure of which reasonably could be expected to cause exceptionally grave damage to the national security that the original classification authority is able to identify or describe.
Disappearance of ex-general with UFO secrets a ‘grave crisis’: Ross Coulthart
Disappearance of UFO expert is ‘national security crisis’
U.S. Air Force Major General William Neil McCasland was dissapeared from his home in New Mexico.

UFO expert’s disappearance in New Mexico is a ‘grave national security crisis,’ reporter warns
The mysterious disappearance of a retired Air Force major general with deep expertise about UFOs who went missing without a trace Feb. 28 constitutes a “grave national security crisis,”…



