Climbing into Harrison Horses try to keep a driving rain out of their faces as Montana Rail Link’s 844 local climbs the 2.2 percent mountain grade into Harrison, Montana, over this scenic branch on the Sixth Subdivision. Usually operating only once a week to Harrison, the local is powered by MRL GP35 No. 403, grinding up the grade with exhaust heading straight up into the moisture-laden sky on June 16, 2014.