IN AUGUST,SEVEN MEDIA-SAVVY professionals from Edelman,a Chicago public relations firm,flew to Bentonville,Ark.,for an unusual assignment.Although they remain on Edelman's payroll,the PR experts,some of them seasoned veterans of political campaigns,now run a new office deep in the headquarters of Wal-Mart Stores Inc.Dubbed "Action Alley," the office,and a similar one in Washington,D.C.,acts as the nerve center of the world's largest retailer's campaign to soften its public face.
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