0023 hours – Box Alarm – Prairie & Joy – Fire reported in a dwelling, Central has no address. Engines 34, 42, 55, Ladder 22, Squad 4, Chief 7. Engine 42 stretched on a dwelling at 8717 Prairie Street and Engine 34 dumped the monitor. Chief 7 assumed command reporting fire in a vacant dwelling, holding all companies. Ladder 22 (Safety Officer), Squad 4 (RIT). Fire on the second floor with extension to the second floor.