Out along the Battle Road the fields go blue at four o'clock in late winter, thawing all afternoon and locking up again the moment the sun drops behind the trees. OneGuard Roofing LLC works snow removal in Lexington through exactly that cycle, plowing driveways and clearing walks during the storm and coming back when the melt refreezes into something harder than the snow ever was. Late-season storms are the heavy ones, more water than powder, and moving them takes patience with the machine. The payoff is a driveway down to bare pavement and a path to the door a person can walk without thinking about it. In a town this old, that is the whole ambition — keep the ordinary day possible.