Southbound train with four diesel locomotives south of Castle Rock, Colo. Front view of train from a distance. The first engine is a green, white and black Burlington Northern engine numbered 8088. The second engine is gray and orange with "Santa Fe" on the side. The third engine is green, white and black Burlington Northern 7130. The fourth engine is a blue Electro-Motive (rented to the BNSF by General Motors). Engines are pulling boxcars south past Castle Rock.
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