By Eliza Mohler, Staff Writer, The Times Ken Rongaus is sworn in as corporal by Mayor Matt Fetick as his family looks on. KENNETT SQUARE – Kennett Square’s finest was out in full force at Monday night’s Borough Council meeting as police officers Ken Rongaus and Andrew Manko were promoted to the rank of corporal. Police Chief William Holdsworth said Rongaus and Manko were each chosen for the promotion...