Seems the Americans don't use the word 'box' any more. Apparently it has been officially replaced by container. So when you go flying on ops, you actually go into the container. And innovative thinking is now thinking outside the container.
Head is another word that has been replaced too - cranium. Missiles no longer have warheads, but warcraniums.
I didn't know whether to laugh or cry when I heard that at a meeting during the week. But it seems the otherwise seemingly normal and vaguely sane USAF Colonel was deadly serious.