Heritage Phase IV Amtrak engine #164 (P42DC) leads the California Zephyr through the Denver Yard at sunrise.

Chicago-bound Borealis departs Red Wing.

This view from the top of Blue Mountain gives a good view of the Big Ten Curve as the California Zephyr #6 train drops down the 2% grade towards Rocky, Colorado.

The lead engine on the California Zephyr looks like it's about to time travel as it runs through Rocky, Colorado on the Moffat Tunnel Sub towards Denver.

The Phase IV Heritage Unit leads the Carolinian into Durham in the late afternoon.

Amtrak 30 heads east, across Back Creek, with a heritage unit leader and a former "Pepsi can" trailing.

164 Phase IV heritage locomotive leading the "City of New Orleans" train 59 was a welcome surprise on a morning in late November.

Celeberty 164 leads a late running 53 into a lucky patch of sun.

A Heritage P42 leads the Silver Star out of Cary.

The Silver Star heads into Raleigh behind the Phase IV Heritage Unit.

The Phase IV Heritage P42 leads the Silver Star into Apex.

The Phase IV Heritage P42 leads train 79 into Cary.

Amtrak's Heartland Flyer heads south through the Arbuckle mountains of southern Oklahoma on its way to Texas. Leading is Amtrak's phase 4 heritage unit

Amtrak train 821, the southbound Heartland Flyer, speeds south from Oklahoma City OK to Fort Worth TX. The carrier’s Phase IV Heritage diesel, P42DC 164, leads the 3-car train, with anot... (more)

Amtrak's phase 4 heritage unit leads the Heartland Flyer south towards Fort Worth