Erin McLellan oversees the Loudoun County Combined Fire and Rescue System, the Department of Housing and Community Development, the Office of Emergency Management and the Division of Public Affairs and Communications and serves as liaison to the county's Constitutional Offices - the Clerk of the Circuit Court, Commissioner of the Revenue, Commonwealth's Attorney, Sheriff's Office and the Treasurer's Office — and has responsibility for judicial functions, including those of the General District Court, the Circuit Court and the Juvenile Domestic Relations Court. She also has oversight over the county’s legislative program.