operatives talked about tampering with rails to get a train to come off tracks on valley or bridge. they were in handwritten notes found in the house where bin laden was. and that there was some indication that this was all in the initial planning stages. somewhat beyond the wouldn t it be nice to stage and initial planning stages but they say quoting from a memorandum they sent to the law enforcement community and also the transit community, homeland security says there was some level of planning but they say we have no recent information to indicate any active ongoing plot to target transportation and we have no information on possible locations or specific targets. nonetheless, the homeland security is saying out of abundance of caution the rail industry should pay closer attention to the rails and look for loosened spikes and look for railroad materials that are missing, packages or baggage left on the tracks. those sorts of precautions. pete williams with the latest