Thank you.
I'm particularly interested in the North American interrelationship of our transportation system, and in particular, the rail system. We've heard comments of late, particularly in the press, with regard to certain derailments, etc., that somehow the maintenance of our rail system is somewhat different from that in the U.S. Have you looked at how we manage railways vis-à-vis the U.S.--in particular, the amount of service per kilometre or per mile that we would need?