With their work completed at Mattoon Yard, A431 departs on the final leg of its journey from Memphis, Tenn., to Decatur, Ill. A pair of Tier 4 GE demonstrator units lead on May 22, 2015.
Freshly released from the shop for an EGR modification, two of GE's Tier 4 demonstrator ES44AC's scream downhill into Berthold at 70MPH with a measly 1,455 feet of super-hot UPS traffic.