At approximately 2300 hours units were alerted for the townhouse on fire in the 6700 block of Ducketts Lane. Truck 6 (1st arriving truck), Engine 61 (2nd arriving engine), and Chief 6A arrived to find a middle of the group town home heavily involved with extension to both exposure town homes. Units operated for approximately 4 hours before being released. Ten members (volunteer/career) responded on the call.