At three in the morning the Lynnway belongs to the plows. The road runs the length of the harbor front, and when snow has been falling since evening, the lots and drives off it have to be turned over before the first shift shows up. Obtek Services LLC does that work — snow plowing, entry and walkway clearing, salting and ice control, storm by storm across the winter. It is unglamorous, cold, and almost entirely a question of timing. The payoff comes at dawn, when a lot looks like nothing ever happened there at all.