Denver Rock Island Railroad 996 (NW2) making a run from Commerce City to Denver to help shuffle freight cars in a small yard at I-70 and Quebec.

A conductor operates UPY 577 (GP15-1) via wireless remote to move two grain cars in the 36th Street UP yard in Denver.

BNSF 669 (C44-9W) in Warbonnet paint is flanked by visitors from the north and south - CSXT 4741 and 4739 (both SD70MAC’s) and FXE 4610 (ES44AC) - while sitting in the Denver BNSF engine yard. .

BNSF 4683 (Dash944CW) and team gleam with help from a Colorado sunrise over the BNSF engine yard in Denver.

There is a 30 year age difference between UP 7709 (ES44AC built in 2005) and UPY 1329 (MP15DC built in 1975).

The windows of cab BNSF 1802 (SD40-2) get a good cleaning early in the morning before the crew heads out to the yard.

Blue GMTX 2688 sits in the UP North Yard along with a nice variety of other power - UP MP15's, a couple Southern Pacific schemes and a LLPX.

The crewman of DRIR 1083 (SW1500) secures the gate after dropping off a load of cars to the Waste Management paper recycling facility in Denver.

BNSF 6391 (ES44AC) waits with BNSF 9255 (SD70ACe) for servicing at the BNSF engine shops.

Class reunion photo of BNSF power: BNSF 2745 (GP39E) is the oldest unit having been built in 1962, followed by BNSF 556 (B40-8W) built in 1990 and BNSF 4148 (Dash944CW) built in 2002.

The early morning sun begins to warm the frost on the cab and illuminates the control panel of BNSF 1833 (SD40-2) as it awaits the duties of the day.

UPY 629 (GP15-1) pulls a string of freight out of the North Yard in Denver.

Veteran unit UPY 1329 (MP15DC) teams with UP 358 (GP38-2) and gets ready to work the 36th Street Yard in Denver.

UP engines 732 (GP38-2), 695 (GP38-2) and 6195 (AC44CW) face off at the 36th Street yard in Denver.

Larrys Truck and Electric LTEX 925 (SW8), with a chopped-top cab, tends to a grain car at the Manna Pro grain elevator in Denver. This locomotive is nearly 61 years old and still going strong.