The 5851 is the DPU on this empty Scherer coal train as it heads back to Wyoming. BMan shot this same train's head end power earlier in the day at Ladds, TN (photo 164364).
a faded SD70MAC and a new GEVO (plus a unit in DPU mode on the rear) have Powder River coal loads for Georgia Power's Plant Scherer making good time through the Paint Rock Valley