“Ten R.A.F. Men See ‘Flying Saucer’ In NATO Exercise”,
21 September 1952
(The Sydney Morning Herald, Australia)
A UFO entered part of a NATO exercise near RAF Topcliffe in Yorkshire, UK on 20 September 1952, according to the article:
http://news.google.com/newspapers?id=tzETAAAAIBAJ&sjid=GrADAAAAIBAJ&pg=4866,2522235
The silver, disk shaped UFO was sighted by at least ten officers and the crew of a Shackleton airplane. The UFO flew five miles behind a Meteor fighter airplane at 15000 feet.
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