Author Timothy Good tells Sky News the threat from UFOs is serious and governments around the world are not dismissing the phenomena. The Ministry of Defence closed its UFO desk and "hotline" in a year when sightings reported to the department had trebled.
The latest tranche of declassified files covers the final two years of work carried out by the MoD's UFO desk. In a briefing for the then defence minister, Bob Ainsworth, in November 2009 a civil servant, Carl Mantell of the RAF's Air Command, suggested the MoD should try to significantly reduce the UFO work
