HARWICH, MA—Boston graphic designer Kirk Bannon ducked out of a Harwich Stop 'N' Shop convenience store Tuesday, successfully avoiding contact with store cashier and onetime high-school classmate George Moseley. "George and I were in Mr. Telscher's first-period biology class together," said Bannon, 26, who was back in his hometown for a friend's wedding. "Looks like he's an assistant manager." After sneaking out of the Stop 'N' Shop, Bannon drove to a Gas 'N' Go three blocks away to purchase a gallon of milk and a New York Times.