NS 4130 (AC44C6M) runs past a signal in Keenesburg, Colorado as it heads west on the Brush Sub.

NS 4130 (AC44C6M) and an RTD commuter train run past the Riverside Cemetary in Denver, Colorado.

NS 4130 (AC44C6M) runs a grain train through Tonville, Colorado as it heads towards Denver on the Brush Sub.

BNSF 6266 (ES44AC) sits by the fueling rack at the engine servicing facility in Denver, Colorado.

BNSF 5246 (Dash9) gets ready to pull a train out of the yard in Golden, Colorado.

BNSF 6204 (ES44DC) leads a mate through the yard to a waiting train in Denver, Colorado.

Former Burlington Northern 2745 (GP39-3) runs to the Denver Yard for a turn at sorting freight cars.

BNSF 1600 (SD40-2) sorts a cut of cars into the ladders in the yard in downtown Denver, Colorado.

Norfolk Southern #4130 (AC44C6M) leads two BNSF motors and an oil can train through Brighton, Colorado.

Norfolk Southern #4130 (AC44C6M) leads a long oil can train through Hudson, Colorado as it heads west on the Brush Sub.

UP 5830 (ES44AC) leads a freight down Sherman Hill in Wyoming.

UP 5906 (AC4400CW-CTE) leads a long and heavy powered freight east of Cheyenne, Wyoming and heads to Archer Hill.

NS 4130 (AC44C6M) leads an oil can train past Barr Lake as it heads to Denver, Colorado on the Brush Sub

An 'old school' Geep in Burlington Northern Cascade Green paint heads to the yard in Denver, Colorado.

BNSF 1600 (SD40-2) strains to pull a sting of cars out of the yard in Denver, Colorado.