Brand MarketingAAF, CHICAGOBy Adweek Staff|July 1, 2004ShareBy Adweek Staff|July 1, 2004ShareThe American Advertising Federation awarded its 2004 Silver Medal to Bob Scarpelli, DDB Chicago chairman and U.S. chief creative officer, seen here with AAF speaker and DDB Worldwide chairman Keith Reinhard. Adweek Adweek