I wonder whether US B-2 planes are coordinating their routes with various ATCs during their real combat missions to bomb Afghanistan, Iraq and others? They are definitely crossing the Atlantic and, even more, are using some other countries' aerospace (w/o notice or permission?) to reach target areas.
Wasn't it during GW1 that the USA were having a discussion at Whitehouse levels as to who would announce that they were sending aircraft to Saudi to bolster their defences, when it was announced to the world by some Sgt who filed the flightplans.