Sorry twinkie, I thought it would be understood the numbers came from the linked article from the poster I quoted. (We are still doing the baked goods nicknames right?)

http://www.usatoday.com/travel/fligh...etection_N.htm

I also used a percentage calculator located at http://www.csgnetwork.com/csgpercent.html

From the article, 160,000 people were subjected to extra scrutiny, of these 15,000 were referred to law enforcement, of the 15,000 referred to law enforcement only 1266 were arrested.

Over all failure rate equals 99.21%, of those that the BDO deemed nefarious enough to refer to a LEO the failure rate equals 91.56%.