I heard in passing on the television news that OBL was collecting plans to interupt train service in the United States by sabotaging the rails to cause derailments. It was supposed to coincide with the September 11 attacks.
However, over the weekend, there were at least two accidents in the New York City area--one was a commuter rail crash in New Jersey and the other was an empty Amtrak train that 'derailed and blocked an important route.' A broken rail was to blame for the Amtrak crash and there was a 'mechanical failure' that was the cause of the commuter rail crash (article here).
I'm thinking that such a 'coincidence' is no such thing. YMMV.
2 weeks ago