Four blue Montana Rail Link SDs are being used as a manned mid-train helper in a BNSF grain train climbing Mullan Pass just east Weed, Montana, on September 2, 2003. MRL SD45s No. 351, 329 and 377 surround SD40 No. 225 as they roar through Iron Ridge cut on the steep mountain grade. MRL labels No. 351 a SD45M and is former Great Northern 415.