Late evening just west of Williams finds a ZWINPHX with a cut of manifest traffic on the head end.
BNSF 3948 leads an eastbound Z-train as it climbs the grade towards Yampai as it emerges out of the Nelson Tunnel. This tunnel is the only double track tunnel on the former- Santa Fe system.
With a new crew aboard and an approach signal at CP146, BNSF 3948 starts to pull NS 177-06 west along the Dayton District.
BNSF 3948 leads a westbound stack train down main 2 as it heads into Sullivan's Curve.
BNSF 3948 awaits it's next assignment at San Bernardino.
