On the frontlines of the anti-terrorism war: My wife just flew back from Phoenix AZ. At the security checkpoint they stopped her and searched her carry on bag because they said it looked like there was a knife in it. After poking around the security guy found a toothbrush and decided it was what had shown up on the X Ray.
When she got home, she dumped out her purse to find something and what do you know, there was a restaurant butter knife in it. One of her mildly nutso friends in Phoenix thinks it's funny to sneak restaurant cutlery into other people's purses. That doesn't make me feel any safer.