BNSF 1600 (SD40-2) notches up as it pulls a long cut of cars out of the yard in Denver, Colorado.

BNSF 1600 (SD40-2) works the yard in downtown Denver, Colorado.

BNSF 1600 (SD40-2) works the yard in Denver, Colorado, sorting cars into the various ladders.

BNSF 1600 (SD40-2) passes a pair of heavies as they sort a cut of cars in the Denver Yard.

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

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

BNSF 1600 (SD40-2) works the yard in downtown Denver, Colorado.

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

BNSF 1600 eastbound with the 431 local.

A pair of SD40-2s of varied heritage sit in McCook Yard, cooling their wheels over the weekend until called to duty in local service once again on Monday. BNSF Railway 1600 was built by EMD as At... (more)

BNSF 1600 & 3003 shove east to the yard.

BNSF 1600 & 3003 return to Aurora after switching JBS Swift in Grand Island.

A pair of SD40-2s pull into the yard at Aurora with a local.

BNSF 1600 (SD40-2) heads over the South Platte River and a makeshift camp. The dry conditions of the Front Range are evident by how brown everything is and how low the river is.

It's the first day of Fall as the Longmont Switch led by BNSF SD40-2 No. 1600 rolls on through the "sag" just south of Berthoud, Colorado on September 23, 2015. A colorful lash up makes ... (more)