William McRaven: We had, again, done the planning. I knew where all the risks were, and we had planned around those risks to mitigate the risks. So understanding that we wanted to fly in undetected, we knew what the Pakistanis had in the way of defenses. We understood what the compound looked like in Abbottabad. So we knew all of that information. We had very good intelligence that, again, the CIA and NSA provided us. And so with that good intelligence you were able to figure out where the difficulties in the mission were going to lie, and then take the opportunity to, again, buy down that risk to the point where, when I had the opportunity to brief the President, I was very confident that we could do the mission the way we had outlined it.