The first real snow of the year usually shows itself over the water at Louis Engel Park, small flakes moving fast and not sticking, an hour before the streets above start to whiten. That hour is when the plows get checked and the salt gets loaded. JA Construction & Landscaping LLC works the storms that follow — clearing driveways and lots, shoveling the walks, treating the ice so the morning is uneventful. Warm months put the same crew behind mowers, trimming, edging and cleaning up the yard at each end of the season. Ossining and the towns along the river get looked after either way the weather goes.