"Have the Ivy League charlatans drop back to the follow-up car. We've got an election coming up. The whole point is for me to be accessible to the people."

Former Secret Service agent Jerry Blaine remembers what JFK said to him just days before the assassination:

Photos of the motorcade show, regardless of what the president said, Hill was riding on the back of the car during an earlier part of the route.

By the time the motorcade reached the stretch of roadway where the assassination occurred, however, agents could no longer ride on the fenders, Blaine says.

"We were going into a freeway, and that's where you take the speeds up to 60 and 70 miles an hour. So we would not have had any agents there anyway," he said.

That was 47 years ago, today.