Mr. Martin. Yes, sir.
Mr. Ball. Now, what do you think the speed of the President's car was—give me your best estimate of the speed of the President's car when you heard the first shot?
Mr. Martin. I would say it was under 10 miles an hour—between 5 and 10 at that particular time, about the time of the shots.
Mr. Ball. You were going downhill at that time?
Mr. Martin. Yes, sir. The best I remember—I wasn't having any trouble keeping my motor up at that time, so that it was probably between 5 and 10 miles an hour. I don't think it was any faster than 10.
Mr. Ball. Did you at any time come abreast of the President's car in the motorcade?
Mr. Martin. No, sir.
Mr. Ball. Were you under certain instructions as to how far behind the car you were to keep?
Mr. Martin. Yes, sir.
Mr. Ball. What were those instructions?