When a squall crosses the lake and comes ashore, it reaches the long blocks off Laketon Avenue in a matter of minutes and the whole street disappears into white. Sno-Power exists for that hour in Muskegon — plowing driveways and lots, clearing walks down to the surface, salting the spots that refreeze after dark. Timing is most of the trade: too early and the storm undoes the work, too late and everybody is stuck at home. So the route runs, and runs again, until the sky finally quits. There is real pleasure in the last pass, when the pavement is dark and clean and the shovel goes back on the truck.