This train was on the exit for Shops Yard in Los Angeles. The crewman in the photo came out of the lead locomotive and lined the switch for the track in the foreground.
This is the tank train that currently runs on UP's coast line. The train is parked at Main street just north of Shops Yard and the San Antonio Winery by the LA River.
Ready to depart Los Angeles Union Passenger Terminal, ATSF 39C will lead to the train as far as Barstow and then be replaced by F45's for the run to Chicago