At midnight the Centennial Bridge arches stand lit above black water and Rock Island goes quiet enough to hear a plow two streets away. Done Brothers LLC keeps those hours, clearing driveways and parking areas, shoveling out doorways and walks, spreading salt ahead of the refreeze that comes with a falling thermometer. Wind off the Mississippi can undo an hour of work in ten minutes, so a route gets run and then run again. The point of all of it is a morning nobody has to think about: keys, coffee, out the drive. That is what a good night of plowing buys.