And not just flights, all government offices that have any security prohibit any knives. I used to have a swiss knife at most times on me, and I went to the soc

And not just flights, all government offices that have any security prohibit any knives. I used to have a swiss knife at most times on me, and I went to the social security office to get a card (one of the first gov. offices I visited in the US). They wouldn't allow it, but also wouldn't hold it for you. I had to go out and hide it in the bushes like an idiot.