Who knew in advance?

We were surprised to find this in the Yahoo slideshow about Bush's Baghdad visit:

Iraqi Governing Counsel member Ahmad Chalabi sits in the audience as he awaits the arrival of President Bush (news - web sites) at Baghdad International Airport Thursday, Nov. 27, 2003, in Baghdad, Iraq (news - web sites). Bush paid a surprise Thanksgiving day visit to American troops in Baghdad. (AP Photo/Pablo Martinez Monsivais)

It's a minor point, but did Chalabi know more about the visit than even some Secret Service agents?

UPDATE: According to Juan Cole:

It turns out that President George W. Bush did meet on Thursday with four members of the Iraqi Interim Governing Council. All 24 had been invited to a Thanksgiving Day event at the Baghdad Airport, but they were not told the nature of the event. So, only four showed up.

So maybe that explains it.