UP 5725 (AC4400CW-CTE) leads an oil can train towards the east portal of the Moffat Tunnel in a driving snowstorm.

UP 5725 (AC4400CW-CTE) waits on the siding in Tolland, Colorado as the Amtrak Winter Park Express Ski Train passes on the main track.

Storms drift east from Bill, Wyoming, as two Union Pacific coal trains cross Logan Hill on the afternoon of June 13, 2014.

Climbing Logan Hill at the same time are two southbound Union Pacific coal trains on June 13, 2014. The coal train with UP No. 5725 as DPU has already surmounted the grade and is picking up the pa... (more)

Passing part of BNSF’s sprawling yard at Barstow, California, a Union Pacific freight heads east to home rails at Daggett on March 15, 2005. In the background is the Harvey House and depot, now ... (more)

UP's Triple Track Mainline. A westbound auto rack train led by UP 4376 & 5211 is about to overtake a westbound grain train led by UP 5725 & 3883.

UP 5725 rolls along at track speed after topping off Aikins Hill a few miles back.

UP 5725 makes its way down the Palmdale Cutoff.