 What was your reaction when you saw the events unfold on Saturday? Shock and then concern, obviously, for the former president. This is an event that should have never happened. Who is most responsible for this happening? What I would say is the Secret Service is responsible for the protection of the former president. So the buck stops with you? The buck stops with me. I am the director of the Secret Service. It was unacceptable and it's something that shouldn't happen again.