A Gaggle Of Gensets. Union Pacific Railroad Yard 2724 (National Railway Equipment, 3GS21B) sits with sister units UPY 2746, 2712, and 2740 in Grand Junction, Colorado on the very hot afternoon of Monday, July 27, 2020. After spending their careers mostly in southern California they had been moved to this area, where a number of UP units are stored and facing an uncertain future.