1 CSX Transportation Inc., operates the largest railroad in the eastern United States with a 22,000-mile rail network linking commercial markets in 23 states, the District of Columbia, and two Canadian provinces.  UP - Union Pacific Railroad. Union Pacific Railroad is an operating subsidiary of Union Pacific Corporation. It is the largest railroad in North America, operating in the western two-thirds of the United States.
Chief Justice John G. Roberts, Jr., is the 17th Chief Justice of the United States; he has been the incumbent since 2005. All federal court judges, including Supreme Court Jus â¦ tices, are commission for lifetime appointments. The average tenure on the bench is 25.5 years.
1 Chief Justice of the United States: The Chief Justice is appointed by the president and confirmed by the Senate. 2  The Chief Justice may be âpromotedâ from the status of Associate Justice, or may be a new appointment to the Court. 3  He or she serves a life term just like the other Justices of the Supreme Court.