BNSF 2697 (GP39-3) gets ready to take the Buck Local out of the yard in Longmont, Colorado.

The blue hour begins to give way to the pink color of sunrise as BNSF 2712 (GP39-3) works a cut of cars in the yard in a snowy downtown Denver, Colorado.

BNSF 2691 (GP39-3) works the intermodal facility which is adjacent to the Union Pacific's North Yard in Denver, Colorado.

BNSF 2697 (GP39-3) runs down Burks Hill in Louisville, Colorado.

The Rocky Mountains have fresh snow on the peaks as BNSF 2604 (GP39-3) pulls a short freight towards Lafeyette, Colorado.

BNSF 2604 (GP39-3) heads to the yard in Longmont, Colorado to pick up the local train for Lafeyette, Colorado.

BNSF 2698 (GP39-3) pulls next to the Longmont Depot to pick up orders before heading to the yard.

The BNSF has rotated light power at the Longmont Depot. BNSF 2604 (GP39-3) holds station until orders arrive to take a freight to Lafeyette on the Front Rangs Sub.

BNSF 2549 (GP39-3) waits for a passing stack train before leaving Roggen, Colorado and heading back to Hudson.

BNSF 2604 (GP39-3) works the terminal in Hudson, Colorado.

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

BNSF 2549 (ex ATSF GP39-3) holds on a siding with a cut of oil cans for the refineries in Commerce City, Colorado.

BNSF Geep #2549 (GP39-3) runs from the Longmont Depot to the BNSF yard for a string of freight cars destined for customers in Lafeyette, Colorado.

BNSF 2548 (GP39-3) runs from the yard in Longmont, Colorado to the depot which is located in the downtown area.

BNSF 2530 (GP39-3) runs to the BNSF yard in Longmont, Colorado.