FILE - In this June 20, 2012 file photo, earth-moving tractors and equipment made by Peoria, Ill.-based Caterpillar Inc. are seen in Clinton, Ill. Caterpillar's recent decision to move 300 top headquarters jobs to the Chicago area made Peoria the latest city with a vacuum to fill. Many midsize communities are looking to redefine themselves as more companies trade longtime hometowns for major cities with easier access to global markets and the lifestyle that talented young workers want, with nightlife and public transit. (AP Photo/Seth Perlman, File)
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