Indictment page 8, section 22.
22. On or about July 12, 2003, LIBBY flew with the Vice President and others to and from Norfolk, Virginia, on Air Force Two. On his return trip, LIBBY discused with other officials aboard the plane what Libby should say in response to certain pending media inquiries, including questions from Time reporter Matthew Cooper.
This stood out to me when I read this yesterday.
My question is...how would they know they discussed this unless someone on board has testified to this?