"Terrorists evolve. Threats evolve. Security must stay ahead. You play a part." Is it the teaser to the next blockbuster thriller? Or maybe an ad for the hottest video game? Nope. It's the tagline for the Transportation Security Administration's three-month-old Evolution of Security blog. Written by TSA employees, this blog aims "to facilitate an ongoing dialogue on innovations in security, technology and the checkpoint screening process." As the tagline suggests, this is not your average government blog with dry writing and dull visuals. The EoS blog is an impressive example of how a serious (and often tetchy) subject for travelers can be explained and humanized. It's a great resource for parents whose children have questions about airport security and what happens at checkpoints. For instance, in a post that dispels some of the misconceptions behind millimeter wave whole-body imaging, the blogger writes "As a married father of five small children, I wouldn’t think twice about sending my wife, my four boys or little girl into this machine. I’ve seen the image it produces and I am not only confident as a TSA employee—but as a citizen—that TSA has done everything possible to address passengers’ privacy concerns regarding whole body imaging."

A favorite gizmo on this blog is the "Delete-o-Meter," a counter that displays the number of comments that have been deleted so far, with a link to find out what it takes to get your comment deleted. You gotta love an airport security guy with a sense of humor.