As I mentioned many posts ago, I was a friend and colleague of Dan's. If memory serves, he was supposed to be leaving for NYC that afternoon, or the day after. I believe he was to speak at CrimFest!, a conference he founded. I'm sure there are more substantive links out there, but this is one I found just now to help corroborate: http://prawfsblawg.blogs.com/prawfsblawg/dan_markel/
And here is the link to the conference agenda, which shows Dan scheduled to speak on Monday, July 21, at the conference in Newark: http://prawfsblawg.blogs.com/prawfs...aka-the-sixth-annual-crimprof-conference.html