Six Flags Great America's 'Fright Fest' celebrating 35 years

("Courtesy of Mike Danenberg / Six Flags Great America.") GURNEE, Ill. - Six Flags Great America announced the return of their annual Halloween event, "Fright Fest", for the celebration's 35th year. The park transforms after dark, with spooky rides and haunted attractions. About "Fright Fest" Six Flag Great America will be hosting "Fright Fest" from Sept. 19 to Nov. 1, transforming the park after…