An SD40-2 leads a short local across County Line Road in Palmer Lake on July 13, 2017.

Burlington Northern Santa Fe SD70MAC number 9843 brings up the rear of a southbound coal train in Colorado Springs, CO on July 12, 2017.

Burlington Northern Santa Fe ES44AC number 5905 leads a southbound coal train through Colorado Springs, CO in the pouring rain on July 12, 2017.

A GE locomotive heads up a southbound Union Pacific manifest train in Colorado Springs, CO on July 10, 2017.

An empty rail-carrying train heads south through Colorado Springs, CO on the morning of July 10, 2017.

A northbound empty coal train heads through Palmer Lake, CO on May 20, 2017, following a couple of snowy days.

A pair of ES44AC locomotives bring up the rear of a northbound empty coal train in Colorado Springs, CO on May 20, 2017.

With a snow-capped Pike's Peak in the background, a pair of locomotives lead a grain train south through Colorado Springs, CO on May 20, 2017.

Union Pacific E9A and 4-6-6-4 "Challenger" rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

Union Pacific 4-6-6-4 "Challenger" number 3985 and E9A number 949 rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

Union Pacific 4-6-6-4 "Challenger" number 3985 and E9A number 951 rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

A southbound intermodal train rounds the curve at Palmer Lake, CO on March 4, 2017.

On a mild February 26, 2017, a BNSF coal train crawls uphill at milepost 52 in Palmer Lake, CO.

An eastbound W line train approaches its final stop of Union Station in downtown Denver, CO on February 5, 2017. In the background, a manifest freight train pauses before heading south.

A southbound manifest freight train crosses the bridge over Cherry Creek on its way out of downtown Denver, CO on February 5, 2017. The trailing locomotive is an ES44A6, owned by General Electric ... (more)