Finding the Epicenter of I-O Psychology

Where is the epicenter of I-O psychology in the U.S.? Where is the location around which all research, teaching and consulting revolves? Is it East Lansing, the home of Michigan State? No. Is it Bowling Green, Ohio, SIOP headquarters? No, but you are getting closer. How about Champaign, IL? Is the University of Illinois the epicenter? Warmer still, but not quite there. The center of U.S. I-O psychology is Mount Vernon, Illinois