Quietly humming down in the rail yards, a northbound trainset keeps warm in the snowy Seattle afternoon. The train is parked on what used to be the old BNSF mains, which are now used for MOW and Sounder storage. In the background, Safeco Field's roof hangs over the BNSF tracks. The stadium, famous for it's train horns during baseball games, is home to the Seattle Mariners.