Specific agents would be known to high command by their own names, and when deniability was at stake, their service numbers in long form, or else by invented codenames.
He also summarises the book's use of classic creationist arguments, noting that the book maintains plausible deniability by not explicitly mentioning either creationism or intelligent design.
It is about the destruction of the very essence, the core of human intelligence collection activities: plausible deniability, apparently, for partisan domestic political reasons.