Union Pacific's Big Boy engineer Ed Dickens pilots the locomotive as it runs towards Omaha for the College Baseball World Series.

The fire burns in the belly of the beast. UP 844 (4-8-4) sits in Denver waiting to take the Cheyenne Frontier Days train back to Cheyenne.

UP 688 (GP38N) moves into the North Yard in Denver, Colorado to sort rolling stock.

UP 5889 (AC4400CW-CTE) leads a coal train up the grade to Tunnel 1 of the Moffat Tunnel Sub at Coal Creek Canyon.

UP 5518 (C45ACCTE) helps the California Zephyr 6 which dropped a P42 off the consist due to a bad wheel bearing.

UP 4999 (SD70M) moves to the North Yard in Denver and waits for a train assignment.

UP 1418 (GP40N) waits for orders in the North Yard in Denver, Colorado.

The Denver Rock Island Railroad's SW1500 moves a string of cars to the industrial clients in the Stockyards area.

RTD's Hyundai Eagle P3 commuter train passes a water tower at sunrise as it heads towards Denver's Union Station.

BNSF 1899 (SD40-2) gets ready to move a string of stack cars out of the intermodal facility in Denver, Colorado.

RTD Light Rail train #263 runs towards Littleton, Colorado on a line that parallels the heavy BNSF and UP rail traffic on the Joint Line.

UP 1418 (GP40N) moves a cut of cars in the North Yard in Denver, Colorado.

UP 1980 (GP38N) heads into the North Yard for a day of sorting cars in the snow.

The Rocky Mountaineer's GP40-3 leads the passenger train into Tunnel 13 in the South Draw area east of Crescent, Colorado.

The California Zephyr leaves Rollinsville, Colorado after a crew change. Heavy snows in western Colorado resulted in the first crew timing out.