BNSF 5987 & 6179 are the DPU's on an eastbound coal train.

State Line loads pass the signals, guarding the entrance to the East Joliet Yard.

A coal empty is nearly mid way to the summit of Byron Hill.

BNSF 5987 and six other headend units catch a small hole in the storm clouds as the round a sweeping curve east of Windsor, North Dakota. Note the train also has a DPU unit visible above the 5987.