If you weren't able to make it over to Gewirz this week for the symposium, Swimming in the Ocean of Big Data: National Security in an Age of Unlimited Information, hosted by the Journal of National Security Law & Policy and the Georgetown Center on National Security, you can now watch video of the event online (view below or here). See the schedule and brief program notes for reference — the video is in one nearly 7-hour chunk, so this may be helpful.
The three diverse expert panels and lunchtime keynote address were enlightening and thought-provoking, and complemented the Georgetown Law Library's own symposium, Big Data and Big Challenges for Law and Legal Information, just last month (video of that event is available here).