The office and medical buildings on McHenry's east side fill their lots at seven sharp, which means the plowing has to be behind you by six. Triton Property Services Inc keeps that clock: opening lots, cutting entrances and fire lanes, shoveling walks to the doors, spreading salt on the ramps and crosswalks. Commercial snow work is largely logistics — where the banks go, which aisle opens first, what refreezes at dusk when the lot drains out again. Then a mid-storm pass, so the morning's effort does not vanish under the next two inches. Nobody pulling in at eight has any notion a foot of snow fell overnight, and that is more or less the intent.