I was impressed when I found this one. A guy named Mark Ecko penetrates
Airforce 1 security, makes it to the President's plane and spray-paints
it with Graffiti, wow, and was not busted. He could have easily
attached anything he wanted to. In this case it was only black
Spray-paint. You got to see this:
http://www.jumpingpixels.com/airforce1.html