FOND DU LAC, Wis. (WHBL) - Firefighters were busy working two fires in southeastern Fond du Lac County Thursday morning. Sheriff's Captain Dean Will says a barn on County Highway SS was fully engulfed when firefighters arrived. About the same time, a shed fire was reported on Maureen Drive. Will says both fires may be the result of lightning strikes. The Campbellsport Fire Department received mutual aid from Sheboygan and Washington county fire departments to battle the blazes.