UP ES44AC 5956 idles on the shop track in Jasper waiting for a trip to the Grande Cache Sub where it will continue to repay horsepower hours back to CN.

Iowa Interstate business cars “Hawkeye” and “Abraham Lincoln” rest on a rainy day at the railroad’s yard at South Amana, Iowa, on April 6, 2016.

Brand new CN ES44AC 3898 awaits its next job at Swan Landing.

One of Walker Yard's assigned belt pack remote units, CN SD40u 6007 idles outside of the shop waiting for its next shift.

Former KCS, now LTEX SD50 7005 sits quietly at CN's Walker Yard diesel shop awaiting a trip to Saskatoon and eventually to Clavet, SK to it's new owner at Cargill Limited.

A good example of CN's vast variety of motive power is on display at the west end of the Diesel Shops at Walker Yard awaiting their call to duty.

CN ET44AC 3237 is lifted high in the air for a wheel replacement after being involved in a small derailment.

CN ET44AC 3237 is lifted high in the air for a wheel replacement after being involved in a small derailment.

UP AC4400CW 6806 awaits a trip back to the Grande Cache Sub, idling on the shop track in Jasper.

With six covered hoppers in tow, northbound Huntsville and Madison County Railroad Authority U23B 9554 approaches the Lily Flagg Road crossing in Huntsville, Alabama.

Brand new CN ET44AC 3246 sits on the shop track in Jasper with an already B/O air compressor.

Night Rotary: Rotary OY simmers away in the Chama yard as it waits for its time to charge up Cumbres Pass. This scene was part of a special photo charter put on by the Cumbres and Toltec Sc... (more)

Huntsville and Madison County Railroad Authority U23B 9554 heads light south across Ditto Marina Parkway in Huntsville, Alabama to pull some cars from storage.

A trio of road units await an assignment in track #3 at Jasper.

Employees in the busy Progress Rail Services car shop at Amarillo, Texas, repair Santa Fe covered hopper No. 315510 on June 15, 2012.