Storms tend to reach Melrose Highlands after dark, and the first sound of one is a plow somewhere up on the ridge. Peace of Mind Services Melrose runs those hours — driveways cleared, the street-end ridge broken up after the town truck goes by, walkways, steps and side entries shoveled so a house has more than one way out. The measure of a night's work is the morning: nobody stuck, nobody guessing where the pavement ends. Winter in this city is a series of small logistical problems solved one address at a time. Melrose and its bordering towns get them solved.