GQ is all over the news this week thanks to the attention given to Robert Draper's article on former "SecDef" Donald Rumsfeld. It's a fascinating - perhaps downright scary - read, but if you're like me, you were probably dying to know what all those acronyms are atop each brief.

Marc Ambinder at The Atlantic says, "The briefings are replete with bodacious classification markings, like TOP SECRET//HCS-COMINT-GAMMA//ORCON, NOFORN//EXDIS/X1, X6."

He then proceeds, for the benefit of us civilians, to break them all down here. Please commit these to memory as it is quite possible that future On The Fly email campaigns will borrow some of them. This post will self-destruct in 5...4...3...