A textured autumnal sky made for a painted setting. Knowing the light could change in a heartbeat, I checked the progress of Amtrak train 656 (an eastward Keystone service).

It had departed Lancaster, Pa., and was heading my way. Would the color in the sky hold?

In a matter of moments the rails in the distance glistened from the blue-white LED headlights of an ACS-64.

And there it was!

Tracking the Light explores railroad photography!