A long stack train lead by UP 8638 (SD70ACe) heads towards the western entrance to the Cheyenne Yard.

Creeping along at 12 MPH, this testing special is about to disappear into the west portal of the Moffat Tunnel. The train will stop at East Portal, wait for the tunnel to vent, and return west thr... (more)

After meeting the westbound California Zephyr, EMD starts testing its Tier-4 prototypes. UP's units are pulling east, but will soon throttle down and enter full dynamics. At that point, the SD70AC... (more)

With the afternoon light shinning on the Truckee River, UP 8638 leads its hot westbound Z train over the Sierra Nevada Mountains with a heavy smoking EMD second out.

A spotless Union Pacific SD70ACe has the distinct honor of shoving the MNPWC train, departing Salt Lake City for West Colton, California.

One of UP's newer SD70ace's leads a Northbound general freight up the Palmdale cutoff at Slover.

At dusk, the DPU of an eastbound UP stack train leaves an light trail as it's train snakes along the Feather River.

A former Rio Grande SD40T-2 heads up the Gemco Hauler as it begins its trek across the L.A. basin from West Colton to Van Nuys, seen here on the balloon track at Pepper Ave. with the tail end of t... (more)

UP Southbound Freight Train at Brinkley, Ar. with a UP Patched ( Former DRGW ) SD40T-2 leading a UP SD40-2