Air Traffic Control: Canada shows that privatization is cheaper and better

http://thehill.com/blogs/congress-blog/politics/318798-air-traffic-control-debate-should-focus-on-facts-not-false-terms

https://en.wikipedia.org/wiki/Nav_Canada

http://www.nationalreview.com/article/434785/corporatize-air-traffic-control-safety-efficiency-and-conservatism-robert-poole

https://cei.org/blog/responding-more-distortions-air-traffic-control-reform