A westbound "SuperGrain" climbs uphill with UP DRGW Heritage 1989 third unit back.
A westbound struggles uphill in Run 8, even with a DPU attached.
A DPU brings up the end of this eastbound as it rounds the horseshoe curve.
This eastbound stack train rolls down the 1.8% grade with some borrowed BNSF power.
Ex UP SD40 now CEFX pushes a westbound up Reverse Hill