Okay thanks, that's what I was looking for, especially the Newsweek piece which speaks to its importance.  I've added text about this to the article, using that and the MIT AI Lab page as sources.  But I'm not sure about using the screenshot; the Flickr image is copyrighted to Casey – was he a federal employee or a contractor? – and the site may have actually been owned by the MIT lab for all we know.  Images put up on congressional websites have often fallen into a grey area in this regard.