Brockton's brick blocks downtown were built for a working city, and their loading docks and back lots still have to open on time after a storm. JEM Landscaping and Snow, llc works those overnight hours — plowing lots, clearing entryways, cutting a way to the doors before the first key turns in a lock. Snow gets stacked out of the travel lanes and away from the sightlines at the exits. House drives get the same treatment, right down to the mailbox and the front step. There is a plain sort of satisfaction in handing back a property that looks like the storm went around it.