The sun rises above downtown Denver in the distance, and glints off the side of the lead motors of an eastbound Union Pacific coal train rolling toward Leyden, Colorado, on January 26, 2007.

A westbound stack train runs around a westbound ethanol train.

An eastbound Union Pacific coal train bursts out of the Moffat Tunnel at East Portal, Colorado, on the morning of October 2, 2008.

6508 passes a midwestern skyscraper in Fairfield.

An early morning eastbound coal train passes CP A189.