A frosty-chinned BNSF 5700 (ES44AC) leads a freight through Arvada, Colorado on the Moffat Tunnel Sub.

BNSF 2828 (GP39-2M) leads a load of lumber off the Broomfield Siding towards Lafeyette, Colorado.

BNSF 2530 (GP39-3) crosses the highway with a load of lumber for a customer in Lafeyette, Colorado.

A crewmember of BNSF 2530 (GP39-3) is walking back after throwing a switch allowing the Buck Local to get on the siding in Broomfield, Colorado.

BNSF 5609 leads a westbound empty coal train.

BNSF 5647 & 9675 shove on westbound empties.

BNSF 9218 & 8502 eastbound with a loaded coal train.

BNSF ET44C4 3830 climbs out of Logan, MT with a Q train.

BNSF 9709 (Executive Grinstein SD70MAC) brings the Coors Beer Train into the Denver.

BNSF 2719 (ex-Burlington Northern GP39-2) and BNSF 1732 (ex-ATSF SD40-2) sit at the engine servicing facility in downtown Denver, Colorado.

BNSF 1733 (SD40-2) pulls a cut of cars out of the Denver Yard for sorting.

BNSF 5700 (ES44AC) leads the Provo train through the Crescent Curve as fresh snow blankets the area.

BNSF 8130 (ES44C4) rounds the corner with a freight at Blue Mountain, Colorado at sunrise.

With Mount Evans looking snow packed, the BNSF Buck Local runs the Front Range Sub towards Broomfield, Colorado,

BNSF 4276 has 31B's train at track speed between Massive and Eldon on the Laggan Sub.