Being the middle of UP territory, and surrounded by BNSF elsewhere, I don't get much other than those two, even when I travel. This was a pleasant surprise, and on my home turf no less.
Here, KCS AC4400CW #4579 and ES44AC #4688 lead a Department of Defense extra westbound down the Sharon Springs sub past MP 296 near Hays, Kansas.
Canon EOS 30D
Canon EF 70-200mm f/2.8 L IS USM
ISO 200 @ 1/1000, f/8