BNSF's strategy for powering their oil trains on the Moffat differs quite a bit from UP. UP will send westbound empty oil trains with anywhere from 2 to 6 units on the head end. When they come east, the power is usually 2 x something x something.
BNSF, on the other hand, pretty consistently run trains west with six units on the head end, and returns east on loads with three on the point and three DPUs on the end. Such is the case here, as three units lead this oil train east through Barbara's Gulch. Note the covered hoppers, which is serving as a buffer car (protection car) between the power and the oil train.
