The Fox runs south out of town toward Algonquin, and the cold that follows the river in December has a way of finding every unsalted step. Kasper Services answers it with plowing across McHenry — driveways and parking areas opened, walkways cut clean, ice control laid down where the freeze comes back overnight. Sunday mornings after a Saturday storm are their own small deadline, and the trucks are out for it. The job is done when somebody walks from car to door without once thinking about their footing. Plowing reaches McHenry, Prairie Grove, Crystal Lake and Cary.