TSA screening works only ‘a little better than chance,’ according to government report
Summarizing 400 studies over the past 60 years, the report concludes that humans perform only “the same as or slightly better than chance.” Given that the TSA has spent almost a billion dollars on the program, that’s a pretty poor record. http://www.theverge.com/2013/11/13/5100702/tsa-screening-works-only-a-little-better-than-chance-according-to This includes extensive studies of the TSA SPOT programme over 2011 & 2012