From Cheshire Road on a clear winter night, Greylock's long shoulder shows up as a darker piece of the dark, and cold pools in the low ground until the air aches. Michael Bianco Landscaping is out under it, plowing driveways and lots across Pittsfield, clearing walks and steps, laying salt where ice sets up first. Storms in this valley have a habit of beginning softly and finishing serious. The aim is unglamorous and exact: pavement showing, banks pushed back, room enough to turn a car around. By sunrise the way out is simply there, the way it ought to be.