According to CNN plans were found for Al Quaida to attack the US rail system. By putting obstacles on the tracks in order to derail trains. It was also said that these plans were 'only on paper'. Well, good Golly Gosh, the big, high tech terrorist monster threat, bombing everyone and possibly seeking briefcase nuclear weapons seems to be down on it's luck to be merely speculating chucking a few bits of debris on a railway line, especially considering how few people travel by rail in the US. Commerce ? I think God has recently done more damage to transport-related commerce in the USA than a few bits of concrete on a main line. How much bollocks can a person take ?