A Union Pacific intermodal rolls downhill in the Sonoran Desert with a growing monsoon storm to the East.

With a 12,803 ton manifest train UP 8078 leads the charge up the 2% grade out of Benson, AZ on a stormy afternoon

Eastbound train near Weatherby in Eastern Oregon.

Eastbound train Durkee in Eastern Oregon.

Eastbound train east of Pleasant valley in Eastern Oregon.

Eastbound train at Pleasant valley in Eastern Oregon.

With only seconds to spare before the sun had set, UP 8078 South leads the RBBX Circus train around the curve between Hiland and Silverwood on the Mojave Sub.

Union Pacific's CBTND9-22 chugs up the grade near Robinson Road in the middle of Converse County, Wyoming, as this SD9043MAC engine heads south on the BNSF Orin Sub.