A September day comes to a close as a short CSX work train of side dump cars scoots along the James River near Big Island, Virginia.

The blue hour of the morning sets in just before sunrise as the Silver Bow to Pocatello manifest scoots along the Montana Sub near Monida, Montana.

With the sun just minutes from falling behind the horizon, BNSF 6631 leads an eastbound stack train across the Arizona desert nearing its crew change point at Winslow.