Thanks Pontious. Well as I said, I'm not particularly concerned by the details as such, but there doesn't seem to be any available info on just how the various weapons were armed. There are some occasional references to "in flight" arming but again they don't specify what this would involve. Naturally, it didn't involve the last-minute insertion of material (as was the case on some early bombs) but on the other hand I can't find anything to explain just what the procedure was. Seems a shame not to make mention of such a relevant point in my book, especially when it's been overlooked in every other Vulcan/V-Bomber book to date.