FILE - This Jan. 4, 2012, file photo shows a Union Pacific train as it goes through a tunnel along the Columbia Gorge near Bridal Veil, Ore. Union Pacific Corporation on Thursday, April 19 reported 2012 first quarter net income of $863 million, or $1.79 per diluted share, compared to $639 million, or $1.29 per diluted share, in the first quarter 2011. (AP Photo/Rick Bowmer, File)

Associated Press
FILE - This Jan. 4, 2012, file photo shows a Union Pacific train as it goes through a tunnel along the Columbia Gorge near Bridal Veil, Ore. Union Pacific Corporation on Thursday, April 19 reported 2012 first quarter net income of $863 million, or $1.79 per diluted share, compared to $639 million, or $1.29 per diluted share, in the first quarter 2011. (AP Photo/Rick Bowmer, File)
FILE - This Jan. 4, 2012, file photo shows a Union Pacific train as it goes through a tunnel along the Columbia Gorge near Bridal Veil, Ore. Union Pacific Corporation on Thursday, April 19 reported 2012 first quarter net income of $863 million, or $1.79 per diluted share, compared to $639 million, or $1.29 per diluted share, in the first quarter 2011. (AP Photo/Rick Bowmer, File)
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