The Great Bend Fire Department was busy this weekend with five separate fire calls ranging from a campfire that got a little out of control to two structure fires.The cause of a fire that caused major damage to a home at 1217 Madison St. on Sunday morning is still under investigation, Chief Mike Napolitano said.Units reported heavy flames coming from the porch and front area of the residence as they arrived at the scene. The home is owned by Tom Pearson and was vacant at the time of the fire. The GBFD along with members from the Kansas State Fire Marshal’s Investigators and Great Bend Police Department remained on scene until approximately 4 p.m. looking into the cause of the fire.