If you want to get a better idea of consists on modern US railroads take a look at the webcam at Rochelle, Il railroad park. UP and BNSF cross on double track diamonds. Not as much traffic as 10 years ago but still very busy. 6 hour time difference so at this time of year still dark at 13.00 uk time Mainly East bounds for Chicago in the mornings and West bounds in the afternoons. Twice a week there is a BNSF local ( used to be GP38-2s, currently 2 fresh painted SD60Ms) appear about 16.25 UK time. Https://www.trains.com/trn/videos-photos/webcam/bnsf-and-union-Pacific-in-Rochelle-il/ There are some long waits on occasions but go to full screen and turn on the sound that way you hear before you see. There is also an in screen picture facility so you can play and still watch.
Rochelle, Illinois this morning around 09.15 local time. The BNSF local (below) consist was a BNSF 50ft Box, A BNSF 57ft Mech Reefer, a 16k gall tankcar + 6 x50ft Box cars mixed TTX, BNSF and Railbox
