If you were looking for Santa, you would probably head to the North Pole. But we ran into St. Nick just walking down the street in the Park Slope neighborhood of Brooklyn. And this one, who in the off-season goes by the same Alex Roshuk, attorney at law, is a tech Santa. He's a longtime hobbyist and electrical engineer, and he invited us into his workshop, which isn't full of elves, it's full of drones.