evidence that they have, according to this senior intelligence official, the reames of evidence that they gathered up on those thumb drives, hard drives, mobile phones, and personal letters of bin laden, that this was an active operational leader of al-qaeda. this was not a figurehead that was hiding off somewhere, disconnected from his community. and so, that is one thing they take away from this. the other thing that was interesting to note, it was not mentioned by the intelligence briefer, i noticed by looking at the video. on the floor with bin laden was a calculator. it looked like one of the sort of money changing or a calculator that you would do to, with a bowl of paper attached to it. so, somebody was doing some calculating in that room, where bin laden was sitting as he was watching himself on tv with the remote control clicker. the senior intelligence official, that s an interesting point about the calculations, but we understand through the senior intelligence official,