TSA briefly retained Peter Mayhew at the Denver airport because his cane resembled a light saber. Presumably they thought it was a real light saber, which of course is just as dangerous as Grandma's knitting needles.
I saw the pics on twitter Mr. Mayhew is such an obvious threat. :roll: I've met Mr. Mayhew and seen that cane and it is really cool he and his wife are really nice.