chicagotribune.com/2013-03-22/business/chi-faa-trims-air-traffic-tower-closings-in-149-20130322_1_faa-contract-tower-program-tower-closures-tower-closings” rel=”nofollow”>http://articles.chicagotribune.com/2013-03-22/business/chi-faa-trims-air-traffic-tower-closings-in-149-20130322_1_faa-contract-tower-program-tower-closures-tower-closings