A 500 series CSX AC4400, led CSX Q143-22 (North Baltimore,OH-Jacksonville,FL) south as the long intermodal train conquered the unforgiving 7-Mile Hill on the outskirts of the town of Tullahoma, TN (MP J-67.0 NE Tullahoma). With wet rails the train had issues 30 miles north trying to talk on the foot hills of Middle Tennessee in the cold rain. It's very nice once again to catch a YN2 motor on the head of a train, cause this paint scheme is not long for the world.