Gritty glint On Montana Rail Link’s Mullan Pass, fourteen locomotives head back to Helena, Montana, as a light engine movement on the afternoon of February 6, 1997. Two 4-unit helper sets, a 2-unit point helper and a set of four BNSF locomotives glint the evening sun at Austin. With all of that sand residue swirling into the sky, it looks like someone forgot to turn off a sander or two on some of the locomotives!