 The initial reason that MI6 launches an investigation, mysterious  radio interference being picked up at Cape Cenaveral isnt as far  out of the question as one might think. A memorandum to the Pentagon  in the year the film was released, reported unusually heavy radio  emissions from Cuba, and that if John Glenn (III) (qv)s upcoming  orbit of the Earth were to fail, a case could successfully made  (whether true or not) of Cuban sabotage.