CHICAGO–(BUSINESS WIRE)–ComEd and the Chicago Park District invite everyone to welcome in the summer season at the 12th annual Switch on Summer festival on Saturday, May 9 at the site of Chicago’s historic Buckingham Fountain in Grant Park. As part of the event, one lucky Illinois resident will have the chance to switch on the jets that turn on the iconic fountain. This free, family-friendly event runs from 11:30 a.m. to 1 p.m., and includes preview performances of the Park District’s 14th an