West of the neighborhoods, the runway lights at Centennial Airport come up out of the dark long before the first small plane rolls, and the lots around them have to be open by then. Eco Contracting works to that clock — plowing commercial lots and drives, clearing walkways and entries, and breaking up ice at the doors and along the loading edges. A storm on the high plains does not politely stop; it stacks on the northwest side of every building and drifts across the flat approaches, so clearing is a matter of returning rather than finishing. Residential driveways get the same early start. By the time the first vehicles arrive, the lot reads as if the storm skipped it.