It's usatoday, I know, but the reporting seems straightforward.

Missed loaded guns: http://abcnews.go.com/Blotter/loaded-gun-slips-past-tsa-scre... http://abcnews.go.com/US/tsa-lets-loaded-guns-past-security-...

Seems like the screening is working, then.

> Missed loaded guns:

This statistic is meaningless without the number of times where they caught loaded guns.

And once we have these numbers, make a suggestion to improve that percentage.

http://criminal-law.freeadvice.com/criminal-law/arrests_and_...

EDIT: Here's an example of a red team "success:"

http://www.9news.com/news/story.aspx?storyid=67166&catid=222