Another pair of Eastern Kentucky volunteer fire departments are merging. W.R. Castle Fire & Rescue in Johnson County has announced they have merged with the River Volunteer Fire Department. WYMT reports the two departments are now a singular agency that will serve around 4,600 people in an area of 48 square miles. Officials say it will provide an improved ISO rating for property owners which means savings on homeowner’s insurance. As we reported last week, the Belfry Volunteer Fire Department has taken over the day-to-day operations of the Turkey Creek Volunteer Fire Department which adds about 12 square miles to Belfry’s coverage area.