Sword canes: A relatively obscure weapon favored by blind Japanese feudal masseuse-vigilantes, or the greatest threat to aerial safety our nation has ever seen? I'm gonna err on the side of caution and go with the second one. Fortunately, the Transportation Security Administration is on it!
In this helpful instructional video — filled with the kind of cheerful music we expect for these sorts of things —a TSA officer explains that if you have a sweet-looking ancient cane you got at a garage sale, you may want to check that it doesn't conceal a badass sword.
Those are prohibited on planes. Duh.
This, of course, assumes that you didn't know you had a badass sword inside your cane. If you did, you're probably some sort of international assassin and thus more careful about this sort of thing. But for the rest of you, "Twist and Inspect!"
Hat tip to Roger Simon on Twitter!