A more appropriate analogy would be if you had guys watching airline movies. I'm not saying that a fantasist can't be dangerous. And now he's locked up.
"Senior Whitehall officials have told The Telegraph that Bourgass and some of his associates intended to target the busy rail link between central London and Heathrow Airport. The plan was to place ricin, a fast-acting and potentially lethal home-made poison, on hand rails and in lavatories on the trains. "
http://www.freerepublic.com/focus/f-news/1385333/posts
"And now he's locked up."
Yeah, for a big 17 years. Rather too long for a fantisist; rather too short for a terrorist.