BNSF 4251 (ES44C4) runs west out of Fort Morgan as it heads to Denver on the Brush Sub.

Canadian National 3321 (AC44C6M) runs towards a siding at Hillrose, Colorado.

Canadian National #3321 (AC44C6M) is tied down at Hillrose, Colorado as it waits for a relief crew to run to Denver.

BNSF 4251 (ES44C4) kicks up the dust as it leads a fast-moving Z Train west on the Brush Sub through Roggen, Colorado.

BNSF 4251 (ES44C4) leads a Z Train west on the Brush Sub through Hudson, Colorado.

The California Zephyr #6 train reflects off of Barr Lake as it runs west on the Brush Sub through Brighton, Colorado.

Great Western Railway's #2176 (0-4-0T Tank Engine) was built in 1930 and worked the sugar beet refinery in Loveland, Colorado before finding its home in front of the former Fort Morgan Power Plant... (more)

BNSF 8125 (ES44C4) leads a power heavy manifest train towards Akron, Colorado on the Brush Sub.

BNSF 7105 (ES44C4) leads the priority Z Train into a cut just east of Akron, Colorado on the Brush Sub.

Amtrak engine #51 (P42DC) leads the California Zephyr #6 train past Barr Lake as sunset.

The California Zephyr runs through Akron, Colorado at sunrise as it heads towards Denver on the Brush Sub.

BNSF MAC 9716 gets ready to squeeze past a trailer as it runs towards the depot in Longmont, Colorado.

BNSF 7213 (ES44DC) leads a stack train into the Denver Yard and will run east on the Brush Sub.

BNSF 8593 (SD70ACe) leads a coal train north on the Joint Line through Bragdon, Colorado.

BNSF 5394 (Dash9) runs south on the Joint Line through the trees in Colorado Springs, Colorado.