After a meet in Forada, and un-thawing a pesky switch, SOO 4446 and 4424 pull the 591 around a curve just north of town. The 591 is the local that serves businesses along the Detroit Lakes sub. It originates in Glenwood on Tuesdays and Thursdays. Its counterpart, the 592, is the exact opposite. It originates in Thief River Falls on Mondays, Wednesdays, and Fridays.