BNSF 4338, a GE DASH 9-44CW, leads BNSF 738 (also DASH 9-44CW) and BNSF 7566 (GE ES44DC) in a trio of DC-powered engines. They were pulling a load of concrete railroad ties north. There has been some maintenance going on north of Colorado Springs on the joint line, do no doubt these ties are already laid and doing their part for the railroad.
As you can see from the above shot, the signal doesn’t light up when traffic’s going north, since they’ve switched over to the PTC signal. It makes catching these northbound trains a little trickier.