Norfolk Southern Corporation is one of the leading transportation companies in the United States. Its subsidiary, Norfolk Southern Railway Company, operates more than 21,000 route miles in over 20 U.S. states and the District of Columbia. Norfolk Southern Railway Company also serves various container ports in the eastern United States and provides connections to western rail carriers. In addition, Norfolk Southern Corporation is one of the largest rail carriers of metals and automotive products in North America. The company owns and operates a fleet of locomotives and freight cars. It serves general warehouses, distribution centers, active coal loading and bulk transfer facilities, and power generation and auto assembly plants. Norfolk Southern Corporation operates an intermodal network for the transportation of coal and industrial products.