UP 2028 LEADS A WESTBOUND DOUBLE STACK DOWN TRACK 1.

AMTRAK #2 HEADS EAST ON TRACK 2.

UP 4915 and an SD60M lead an eastbound doublestack up track 2.

Northwest of Tucson.

Westbound just east of Tucson at Wilmot early evening.

An eastbound waiting northwest of Tucson

Eastbound out of Tucson yard

Just east of Tucson yard

UP 4492 heads east after changing crews in Tucson.

Ex-SP tunnel motor 8556 leads an eastbound UP freight out of Tucson at sunset.

Highballing east with Union Pacific E units

UP 9070 West is one of several trains parked on the east side of Tucson for the New Year's holiday.

The WR-42 dispatcher runs a hot stack train around a manifest on No. 2 track at Irvington with a CSX Dash 8 on the point.

UP 4430 West meets an eastbound stack at Irvington, as both trains try to improve UP's "bottom line."

A UP train makes East as the West bounds have to wait because of a Track Curfew