Two BNSF trains meet of Mullan Pass west of Helena, Montana, on July 4, 2021. With am extended Austin siding now just over four mile long, both trains stay on the move through Iron Ridge cut between Austin and Weed. The head end of a BNSF Q train is about to pass the DPU on the downgrade manifest freight just west of the big cut. Both trains are long, and are passing each above Austin, down below in the background.