Part of the Presidential motorcade included 2-3 white vans. One of the vans had "Staff" marked in the front window. Another had "camera" marked in the rear window. They clearly were transporting a number of media personnel. I was curious if they were associated directly with the government (ie. Administration, Pentagon, etc.)? Or if they were from traditional media outlets? If the latter, would these people represent the media that ride along with the President on Air Force One? Any input here would be appreciated.