A westbound empty BNSF coal train goes past Agency, Iowa on the evening of June 17, 2019. A pair of Gevos leads this unit freight train. A venerable MAC fills the role of distributed power unit (DPU) on the end.
At the start of the video, the signal on the other track can be seen as yellow. The is from a westbound Amtrak train running on that track. It will pass here in a few minutes: https://youtu.be/BXLXiEkLl84.
Engines:
BNSF 6107 GE ES44AC
BNSF 6021 GE ES44AC
BNSF 8904 EMD SD70MAC
