FBI memo — 'Protection of Vital Installations' (22 Mar 1949)
official-recordprimary_documentUS Department of Energy (DOE)
Declassified FBI/military office memorandum recording that the green-fireball phenomena were classified SECRET and categorised as 'Unconventional Aircraft'.
Reproduced declassified office memorandum (SAC San Antonio, 22 Mar 1949) recording that green-fireball phenomena from ~5 Dec 1948 were classified SECRET, that the 16 Feb 1949 Los Alamos conference addressed them, that investigation became a primary USAF responsibility, and that the objects were categorised as 'Unconventional Aircraft'; cites LaPaz's Starvation Peak sighting and its six non-meteoric characteristics.