Cover Story piece on Portland police sergeant Sullivan Rizzo, who works part-time as a wrecker driver for Nappi\u27s Towing, a company co-owned by his wife that routinely receives towing business referrals from the police and public works departments. The arrangement may be a violation of the Portland Police Department\u27s rules. Allegations that Rizzo used his position within the department to benefit his wife\u27s company were raised by James W. Fletcher of South Portland, who co-owns Nappi\u27s Towing with Rizzo\u27s wife Sandra and is locked in a legal dispute with his partner over control of the company. Also under investigation is a company called Metro Towing, another towing company owned by Sandra Rizzo that employs her husband...