BNSF 2857 (GP39-2) leads the buck local towards Broomfield, Colorado on the Front Range Sub.

BNSF 2857 (GP39-2) waits on a siding in Longmont, Colorado for the call to action.

BNSF 2857 (GP39-2) muscles a freight towards the Broomfield Siding on the Front Range Sub.

BNSF 2857 (GP39-2) sits at the depot in Longmont, Colorado as the crew gets orders for a run to clients in Lafayette.

BNSF 2857 (GP39-2) heads into the Broomfield Siding on the Front Range Sub.

BNSF 2857 (GP39-2) runs south of Longmont, Colorado on the Front Range Sub towards Broomfield.

A pair of BNSF Geeps lead a freight through Boulder, Colorado on the Front Range Sub.

BNSF 2857 (GP39-2) runs through past apartments in Broomfield, Colorado.

BNSF 2857 (GP39-2) runs through Boulder, Colorado on the way to Louisville.

BNSF 2857 (GP39-2) passes the Denver to Laurel Montana on the Front Range Sub in Broomfield, Colorado.

BNSF 2857 (GP39-2) meets the Denver to Laurel Montana on the Front Range Sub in Broomfield, Colorado.

BNSF 2857 (GP39-2) heads south on the Front Range Sub and will soon arrive in Boulder, Colorado on its way to Lafeyette.

BNSF 2857 (GP39-2) leads the Buck Local out of Longmont, Colorado on the Front Range Sub.

The Buck Local runs in a push me - pull you configuration as it heads towards a dead-end siding in Lafeyette, Colorado.

BNSF 2857 (GP39-2) rounds a corner in Broomfield, Colorado as it heads south on the Front Range Sub.