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The '''Union Pacific Railroad''' (UP), headquartered in Omaha, Nebraska, is the largest and oldest operating railroad network in the United States, and as of 2009 covers 23 states in the western two-thirds of the United States. It is an operating subsidiary of Union Pacific Corporation. James R. Young is president, CEO, and Chairman.<ref>[http://www.uprr.com/aboutup/exec/index.shtml "Executive Profiles - James R. Young, President and Chief Executive Officer"] Union Pacific Railroad, November 2009</ref><ref>[http://www.uprr.com/aboutup/exec/index.shtml "Union Pacific:About Us"] Union Pacific Railroad Website, November 2009</ref>