The Z train, or, more appropriately, Union Pacific's ZEMCH roadrailer train, passes Mitchell Yard in Milwaukee, Wisconsin, as the Cudahy job pulls out. Both trains are in motion; nothing's slowing the hot intermodal train, which runs five days per week over UP from East Minneapolis to Chicago, but the Cudahy job, with its UP-painted LLPX GP38-2, will pause for a while until the Z train is safely off in the dstance.
