Chicago Tribune (Feb. 1) -- The Transportation Security Administration this month plans to significantly reduce the number of frequent fliers who go through faster airport security lines for free, even though they haven't signed up for vetting programs like PreCheck, a TSA official said. A University of Illinois study in December proposed that if the TSA paid for PreCheck applications for high-volume fliers, it would save the agency $34 million a year, create shorter lines and enhance security at the nation's airports. The lead author of the study, University of Illinois computer science professor Sheldon Jacobson, said the TSA had not yet responded to the suggestion.