TSA Logo Contest entry
It's not easy without photoshop! I've gone with a theatrical theme, noting the now doubleheaded eagle after the theatre masks, which instead of arrows and leaves, it's holding an evil toothpaste tube and a no fly list.
The associated motto is:
"No lights, no cameras, no action, no fly list, no shoes, no liquid containers larger than 100ml, no ..." which has the beauty of being easily updatable after each new terrorist threat.