Mr. Martin. Yes, sir; I believe I did.
Mr. Ball. What is the minimum speed at which you can maintain the position of that motorcycle?
Mr. Martin. About 2 miles per hour, I would imagine.
Mr. Ball. Did the President's car pick up any speed from the corner of Houston and Elm—we'll say half way down that hill?
Mr. Martin. No, sir; I don't recall it picking up any speed in there.
Mr. Ball. They were going fairly slow?
Mr. Martin. It may have picked up, gradually picked up, but not enough that I could notice.
Mr. Ball. Did you hear any unusual noise?
Mr. Martin. Yes, sir; I heard a shot, or what I thought at the time to be a shot.
Mr. Ball. What was the position of your motorcycle at that time with reference to the President's car?