I got the impression that W was impatient rather than angry or annoyed maybe he felt rather than all the talk and showing of diagrams that he has probably seen a 100 times that they should be getting on with the purpose of the visit actually visiting the people the explanation of what is currently being done can be done at the same time
You're right, I think. W did seem slightly impatient during the briefing. But at the same time I didn't get the feeling that the briefing was a "show", like something Clinton would've slapped together. The president seemed truly interested in what he was being told. Except when it came to Riley :)