Reminds me of the TSA not revealing how many terrorists it has ever caught due to "national security concerns" [1].

Yet they proudly blog about how many guns, knives and other prohibited items they screen out--but this is not statistically different than the private contractors pre-TSA.

What we do know is that when tested by Homeland Security, they failed miserably [2]. I wonder if we have data from pre-TSA to compare it with?

[1] - http://www.slate.com/articles/news_and_politics/explainer/20...

[2] - https://www.schneier.com/blog/archives/2015/06/tsa_not_detec...