 Mr. Secretary, what concerns you about the fact there were witnesses who had identified a gunman on the building, there was local law enforcement assigned to that building, and of course the Secret Service had the overall responsibility? Where do you think a breakdown may have occurred? Is it because you had to rely on local law enforcement, maybe not having the kind of synergy you might need? Where do you see the breakdown with witnesses saying there's a gunman and action not happening fast enough?