Sullivan County Sheriff-Elect Jeff Cassidy Will Be Taking The Oath Of Office Today, But Will Not Take Over Until September 1st. The Reason, He Has To Participate In New Sheriff’s Training Next Week At The Tennessee Law Enforcement Academy In Nashville. The Swearing In Ceremony Will Be Held This Afternoon At Five O’clock In The Chancery Court Room At The Kingsport Municipal Building. Cassidy Defeated Longtime Incumbent Sheriff Wayne Anderson In The County General Election Earlier This Month.