IIRC, didn’t the CIA and British Intelligence have the capability to eavesdrop on ANY ground line or cell phone in the early 1980s? Certain key words that were monitored would trigger the recording of the conversation. I seem to recall a documentary mentioning this years ago. I believe that RAF Menwith Hill and CFS Leitrim (or, as some people in Ottawa called it, CFS Latrine) were two listening posts, as well as a US base or bases.