The 3985 maneuvers through the rugged Bear River Gorge on Ogden Subdivision. The articulation of the Challenger is really put to the test through this segment of track-age.

An early challenger just west of Cheyenne.

A challenger with a string of reefers on Archer Hill.

A challenger on Sherman Hill

An early challenger.

UP 3985 puts on a show as it departs the south side of Chicago, IL with a NRHS fantrip in June of 1993.

Union Pacific 4-6-6-4 "Challenger" number 3985 and E9A number 949 rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

Union Pacific 4-6-6-4 "Challenger" number 3985 and E9A number 951 rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

Union Pacific's 4-6-6-4 3985 puts on a spectacular show at Buford, Wyoming.

”Boy, You’re About to Get a Cinder Bath!”

That seems to be the look being cast at the photographer as Union Pacific 3985 puts on quite a display for a photo runby. The locati... (more)

The winds on Sherman Hill are not cooperating during the 1985 Rocky Mountain Railroad Club excursion from Denver to Laramie. Thick coal smoke is blowing over the sunny side of the train, casting a... (more)

A UP excursion prepares to depart from Omaha Union Station with a nice view of the city skyline as a backdrop. This view shows off the sheer size of this machine. The Butternut Coffee building ... (more)

Union Pacific Challenger 3985 steams into Laramie with the excursion from Denver. There had been snow both in Cheyenne and on Sherman Hill.

Union Pacific Challenger 3985 sits on a curve after having done a photo runby at Perkins on Sherman Hill. The October snow for the excursion to Laramie was a nice bonus.

Union Pacific Challenger 3985 hustles through the snowfall while running light to Speer. The locomotive is to take over the excursion to Laramie that has been brought up from Denver by EMD DD40X C... (more)