4014 Return to Cheyenne WY UP Steam. In 2014 at Mormon Rocks Cajon Pass California. 

The Big Boy 4014 on its return trip to Union Pacific Steam shop in Cheyenne Wyoming. To be completely rebuilt for service. At this stop all lubricating parts were checked and running gear inspected for the haul over the Cajon Pass. Notice the attention to detail for the Diesel Loco's numbers (4884 and 4014). Union Pacific always does it right!