UP Big Boy #4014 (4-8-8-4) makes smoke as it heads south through Speer, Wyoming on its way to Denver, Colorado.

This shot gives a good look at the 'Elephant Ears' smoke deflectors that were installed on UP Big Boy #4014 as it runs through Speer, Wyoming on its way to Denver, Colorado.

Union Pacific Big Boy #4014 (4-8-8-4) makes smoke as it heads south on the Greeley Sub towards Denver, Colorado.

UP 9091 (SD70ACe) leads a long freight through Speer, Wyoming as it heads west from Cheyenne on the Transcon.

The Union Pacific's Big Boy engine smokes as it climbs the grade at Speer, Wyoming, while on its way to Denver, Colorado.

Union Pacific's Big Boy #4014 (4-8-8-4) makes its second run of the year from Cheyenne, Wyoming to Denver, Colorado. Note the addition of the 'elephant ears' smoke deflectors on either side of th... (more)

UP 9091 (SD70ACe) leads a long freight up the grade to Speer, Wyoming as it heads west on the Transcon.

Unsure of what they're doing here ... they are on the main line (the bypass out of Cheyenne that splits left to Denver and right over the Harriman Cutoff), and a brakeman rides on the pilot with a... (more)

After detraining in Cheyenne, the passenger/steam special backed out to Speer to run the wye. Here, they've completed the backup from the depot out towards Track 4, then run southward past the si... (more)

Union Pacific's Big Boy #4014 runs through the elevated curve at Speer, Wyoming as it runs backwards towards the steam shop in Cheyenne.

Fog and rain mist covers the area of Speer, Wyoming as the first run of the year for the Union Pacific's Big Boy engine included a run to Denver, Colorado. Here we see 4014 making smoke as it cli... (more)

Union Pacific Big Boy #4014 kicks up the snow as it runs towards Speer, Wyoming while heading back to the barn in Cheyenne after its inaugural run following a lengthy restoration.

Union Pacific's Big Boy #4014 (4-8-8-4) runs through Speer, Wyoming as it returns to its home base at Cheyenne.

Union Pacific Big Boy #4014 heads towards Speer, Wyoming on its return trip to the home shops in Cheyenne.

Union Pacific Big Boy #4014 runs through Speer, Wyoming as it heads back to the shops in Cheyenne.