we have learned according to my sources that the courier was a protege of khalid sheikh muhammad, andn intelligence officials interview detainees about some of the names of the couriers who might actually be aiding osama bin laden, some of the detainees conceivably ksm held out on them, and by holding out, the intelligence agency figures, you know, this guy is probably something, and the problem is that, wolf, they only knew his nickname. they didn't know his real name, but it was considered high-value information so they press and trailed him in classic espionage, and classic work, and they learned his name from a different part of the world and they tracked him around. they could not follow him around and they had a sighting of him, so they set up an elaborate surveillance effort that led them in august of 2010 to that compound and one of my sources said to me, when we saw that compound, we said, wow. this is different. and then leon panetta the cia director said to them, i want a body count of everybody who lives there, and who they are and where they are sleeping. it was a courier