BNSF 1729 (SD40-2) sits after being serviced at the engine servicing facility in Denver, Colorado.

BNSF 1729 (SD40-2) leads a freight towards Golden, Colorado as heavy snow falls along the Colorado Front Range.

Heavy snow is falling in Golden, Colorado as BNSF 1729 (SD40-2) leads a short freight to the BNSF yard.

BNSF 1729 (SD40-2) works the yard in Denver, Colorado.

BNSF 1749 (SD40-2) shuffles a cut of cars back into the ladders in the yard at Denver, Colorado.

BNSF 1729 (SD40-2) is sorting a cut of cars in the Denver Yard while a RTD communter rail train passes by in the background.

BNSF 1729 (SD40-2) will soon be shuffling cars in the BNSF yard in Sterling, Colorado.

BNSF 1729 (SD40-2) takes a break from sorting cars in the BNSF yard in Sterling, Colorado.