There's no question this has been a challenging month for CN but accidents are very rare in this railroad and in other railroads. I think that's why there's so much attention being paid.

We understand that the automobiles inside [the train car] may have a very small quantity of gasoline, a very small quantity of oil, that's why we've put the protective booms in place.

We will be pursuing our investigations very, very carefully to find out what the cause of each accident was.