Indiana Harbor Belt 4018 and 4019 sit at the railroad's Gibson Yard engine facility in Hammond, Indiana on September 27, 2018. IHB 4018 was built as Southern Pacific GP40-2 7615 in March 1978. SP retired this engine on October 10, 2002, and it was subsequently sold to the Harbor Belt. Photographed on railroad property with permission and full personal protective equipment (PPE).