Freshly painted Union Pacific AC4400CW 6556 is seen at the railroad's Dolores Yard in Carson, California, on October 18, 2017.

A mixed freight with a locomotive on both ends heads north on the Navasota sub past the searchlight signals at the junction.

UP 6556 finishes out its DPU duties as it brings a unit coal train into NIPSCO's Michigan City Generating Station.

Loaded coal train eastbound at Berea, Ohio

There's nothing like a big ole manifest with varied rolling stock and graffiti. This sundowner is on the block of preceding empty hoppers as a warm May evening's shadows lengthen.

I waited an hour watching UP trains go by hoping for a train on the J. And this is what I got.