Almost overnight, USSC revamped their paint scheme and applied it to three four axle units. Here, they have the first six axle with the variant, but you can see the slight difference in the paint. It was picked up from CSXT, having traveled from Western Rail up in Airway Heights, WA, who have at least two more to send. USSC shops will take #3001 in to add their own mods, including lettering, bringing the current six axle count to four.
