A switcher, front, stands at Union Pacific Corp.'s facility as trucks move shipping containers to a holding area for loading onto freight trains at the Port of Oakland in Oakland, California, U.S., on Wednesday, Jan. 23, 2013. Union Pacific Corp., the largest U.S. railroad by sales, is scheduled to report fourth-quarter earnings results on Jan. 24 before the opening of U.S. financial markets. Photographer: Ken James/Bloomberg via Getty Images