Greenville stands where the Flat River slows through town, brick storefronts on one bank and Baldwin Lake holding the cold at the edge of things. Winter here is steady rather than dramatic — a few inches most nights, week upon week, until the banks along the driveways stand shoulder high. J & M Group Michigan, LLC keeps ahead of it, plowing drives and lots and moving the piles back so the next storm has somewhere to land. Before dawn the town is all headlights and blowing white, and by the time the first shift moves the pavement is open. The whole ambition is modest and complete: nobody's morning gets complicated by snow.