It seems an MIT student was arrested (and nearly ventilated and detonated) for having a "hoax bomb" in an airport.
Said hoax bomb consisted of a circuit board with LEDs on it, connected to a 9V battery.
Because we all know that terrorists openly carry bombs that have lights all over them. Don't they?
Isn't that, after all, how Israeli checkpoints operate - by watching for people with LEDs on them, or animated Aqua Teen Hunger Force signs, or other things that just shout "bomb"?
Makes ya wonder why our troops in Iraq have such trouble identifying enemies. Should be easy, shouldn't it? Anyone with LEDs: Evil Midnight Bomber What Bombs at Midnight. Anyone else: harmless civilian.
Oh, no! I just noticed a green LED on a speaker! It's a bomb! And there's an LED on my monitor! And two on the computer! And three on the UPS! And they all have wires connected to them! I'm surrounded by bombs! Nooooooooo!
Update: Boingboing has more details. Sheesh. MIT was there long before Logan Airport was, people; can't the airport goons get a clue about techies? (Of course not; if they could, they wouldn't be goons.) Back in my college days, I used to travel with a variety of homebuilt electronic gadgetry, wearable and otherwise, and the worst reaction I ever got was an idiot screener making me check my LED bow tie (which ended up on the wrong flight, so I didn't have it for the first day of the Wet Toast Computer Faire that year).