My cousin in an Engineer for BNSF and before he takes a train he gets a notebook with the contents of each car on the train. Except for the government cars, they don't tell you what they are carrying.
He also has a notebook filled with all the instruction for what to do if a car filled with _____ wrecks until the "authorities" can get there.
_________________________
"By failing to prepare, you are preparing to fail." - Frankin