BNSF 8585 (SD70ACe) leads a freight past the North Yard in Denver, Colorado.

BNSF MAC 9928 shoves an empty coal train through West Tonville, Colorado on the Brush Sub.

BNSF 9709 waits for a train to be assembled in a yard in Golden, Colorado 1600

A wagon wheel Heritage I BNSF 1031 (Dash9) waits in the Denver engine servicing facility yard for an assigned train.

BNSF 2712 (GP39-2) waits for servicing at the Denver engine facility.

Amtrak #184 leads the California Zephyr through downtown Denver as it gets ready to stop at Denver's Union Station.

The heritage engine #184 leads the California Zephyr through Coal Creek Canyon, Colorado.

Amtrak heritage engine 184 (P42DC) leads the California Zephyr out of Tunnel 1 at Plainview, Colorado. A friendly wave and a horn toot from Engineer Gary was most appreciated!

BNSF 7529 (ES44DC) leads a special passenger train through Monument, Colorado, giving the BNSF executives a view of some amazing scenery of Colorado's Front Range.

An ex-US ARMY veteran, Hudson Terminal Railroad's 4027 (Baldwin RS4TC) can be found these days shuffling oil cans in Hudson, Colorado.

The California Zephyr rides the rails towards Roggen, Colorado as the sunrise bathes the horizon is a golden glow.

Amtrak engine 28 leads the California Zephyr through Plainview, Colorado and within the hour will be stopping in Denver's Union Station.

An amazing sunrise greets the passengers and crew of the California Zephyr as it runs through Keenesburg, Colorado.

Amtrak heritage engine #184 (P42DC) runs through Coal Creek Canyon on the Moffat Tunnel Sub.

Amtrak engine 33 (P42DC) leads the California Zephyr into the Denver Yard as it leaves the Mile High City.