Canadian National Railway Company (CN) is engaged in the rail and related transportation business. CN's network and connections to all Class I railroads provide its customers with access to all three North American Free Trade Agreement (NAFTA) nations. CN derives its freight revenue from seven commodity groups representing a portfolio of goods transported between a range of origins and destinations. The Company's network of approximately 20,000 route miles of track spans Canada and mid-America, from the Atlantic and Pacific oceans to the Gulf of Mexico, serving the ports of Vancouver, Prince Rupert (British Columbia), Montreal, Halifax, New Orleans and Mobile (Alabama), and the metropolitan areas of Toronto, Buffalo, Chicago, Detroit, Duluth (Minnesota)/Superior (Wisconsin), Green Bay (Wisconsin), Minneapolis/St. Paul, Memphis, and Jackson (Mississippi), with connections to all points in North America.