I was a little surprised to see an EMD SD70ACe-T4 on this train. I know UP acquired 100 of them, but they are relatively rare as a percentage of their total fleet of locomotives. A lot are in storage due to UP's Precision Scheduled Railroading and teething pains.... mostly electrical issues. Keeping them in storage also keeps them under warranty in the meantime.
There is a lot of videos on the net and Big Boy seems to be garnering some decent size crowds on this tour. It's harder to follow a train on a route that plows through miles of forests.

