A train with three Union Pacific engines (SD70ACe 8982 up front, AC4400CW 7153 midtrain and ES44AC 7386 on the rear) interrupts a welder working on the crossing on the adjacent mainline as it crosses the Calumet-Sag Channel while heading along the Indiana Harbor Belt/CSX line through the maze of trackage in Blue Island, Illinois, on September 26, 2021, heading to IHB’s Blue Island Yard in nearby Riverdale.