Looks like they're printing it now.
But I don't know why.
Printing this makes plenty of sense. If the terrorists read this, they are going to wonder if they can trust anybody who has been out of their sight. They won't trust each other, will likely kill each other trying to keep security, thereby doing our jobs for us. This is also likely to make sure that the ones who would go back to the other side won't be trusted and those who manage to get back without anybody knowing that they were gone will keep their mouths shut.