a letter sent anonymously to a radio station in the Cayman Islands
How many such letters are received by radio stations on a regular basis then forwarded to Cayman Islands officials - - enough to cause them to treat such letters suspiciously?
Probably dozens ... meaning this is rivero class material ...
My understanding is that this partucular radio station conducts several 'Art Bell' types shows - and this sounds like a listener participating in that brand of lunacy ...