Union Pacific trains in Davidson Yard Texas.

Before the UP manifest comes, I see a UP light engine head out of the yard in a different direction. The leading unit is a SD40-2B (8952). The unit behind it is a repainted Ex. SP GP38-2 (471). The train coming behind it on another track is a manifest. The leading unit is a RP20GE (2639). The unit trailing is a SD40-2 (9947). It the stops and backs up.