“Revealed: How the government
probed Britain's greatest UFO mystery”,
22 March 2009 (The Daily Telegraph, London, UK)
Top-level UK Ministry of Defence officials investigated a UFO sighting that occurred over a Scottish village on 4 August 1990, according to the official UK MoD UFO files.
The MoD report also revealed that the MoD overrode rules prohibiting investigations into UFO sightings not considered an immediate threat to national security.
The diamond shaped UFO was sighted over Calvine (north of Pitlochry) by two men, and one of the witnesses managed to take six photographs of the unknown object. The Daily Telegraph reports that the photos also show two UK military Harrier jets which circled the UFO before they flew away at great speed:
The badge of the UK Ministry of Defence Combined Services