Well, the TSA has somehow goofed and posted its "top secret" manual for screening airline passengers online. And the TSA apparently believed that covering sensitive up with black rectangles in an Adobe Acrobat file would be enough to hide confidential information... without realizing how easy it is to just remove the layers with the rectangles!
Want to read it for yourself? Here's the zipped-up archive containing the TSA screening manual!
Between this and the leaked e-mails from University of East Anglia's Climate Research Unit, it is a great time to be a believer in limited government :-)