"The Cheney team had, for example, technological supremacy over the National Security Council staff. That is to say, they could read their e-mails. I remember one particular member of the N.S.C. staff wouldn't use e-mail because he knew they were reading it. He did a test case, kind of like the Midway battle, when we'd broken the Japanese code. He thought he'' broken the code, so he sent a test e-mail out that he knew would rile Scooter [Libby], and within an hour Scooter was in his office."