1 - The Black Vault

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DRAFT PRG-FORH.I\ LETTER
I am writing to thank you for your report of an unidentified
flying object seen on ....•••••.••.•••••••••••••••••••••••..•.••••.•••••
\1e are gr.a.teful to you for advising the Department of this
incident and your report will be examined in the Hinistry o:f Defence to
see if there are any defence implications. We cannot undertake to
pursue our research, other than for defence implications, to a point
where positive correlation with a known object is established, nor to
advise you of the probable identity of the object seen.
You will no dcru.bt wish to know, however, that the great majority
of UFO reports turn out to have mundane explanations, the most common
single source being aircraft or the lights of aircraft seen under
unusual meteorological conditions. Other coomon sources have proved to
be astronomical sightings, space satellites or space junk, balloons,
unusual cloud formations crr aircraft condensation trails. Investigations
over a number of years have so far produced no evidence that'uFos
represent an air defence threat to the United Kingdom.