And metadata, the committee has used link analysis, a data mapping technique that former fbi agents say was used to identify terrorist leaders in the 9/11 act. what does that tell you, frank, about the sophistication of this investigation? >> i'm encouraged to hear this, it's what we used to call the enterprise theory of investigation and today there's all kinds of software that engages in victim analysis and network analysis that can tell you, look, while this guy was talking to this person at this time, this similar conversation was going on here and then they hooked up an hour later. we can...