A late-afternoon fire has heavily damaged a vacant house in Bossier City.  Firefighters were called to the 2900 block of Shed Road, just east of Airline Drive, just before 5:45 and got there in about two minutes.  They found the house engulfed in flames but were able to bring the fire under control in about 10 minutes.  Nobody was hurt in the fire.  Its cause is still under investigation