Here's the article it links to, pretty interesting in and of itself: http://www.manchestereveningnews.co.uk/news/greater-manchester-news/radio-silence-puts-sub

Here's the article it links to, pretty interesting in and of itself: http://www.manchestereveningnews.co.uk/news/greater-manchester-news/radio-silence-puts-subs-on-nuclear-1157478 http://www.manchestereveningnews.co.uk/news/greater-manchest... "Secret orders to the captains [of the nuclear subs] say that these deadly instructions are to be opened and acted upon only if the submarine cannot tune in to Radio 4’s Today programme for a given number of consecutive days. That is a reliable sign that Britain has been hit by a nuclear attack."