Box alarm, Fire reported in a dwelling at Heyden between Belton & Van Buren, have no address. Engine 55 stretched on a dwelling, then reported 2 dwellings. Chief 2 reported 2 vacants going holding all companies at 8220 & 8228 Heyden St. Companies on the box alarm: Engines 55, 57, Ladder 27, Squad 2, Chief 2. 0237 hours.