My first thought was some sort of nuclear assurance. In the UK we have radio 4 broadcasting constantly, if there's no communication and radio 4 isn't broadcasti

My first thought was some sort of nuclear assurance. In the UK we have radio 4 broadcasting constantly, if there's no communication and radio 4 isn't broadcasting then we assume a London may have been bombed and a nuclear alert is issued. http://www.manchestereveningnews.co.uk/news/greater-manchester-news/radio-silence-puts-subs-on-nuclear-1157478 http://www.manchestereveningnews.co.uk/news/greater-manchest...