If you have never been to Dallas and saw where Oswald was allegedly sitting, the sixth floor thing seems to be a stretch.
If you have, youd know that it was an easy shot to take.. all of them
I was there. What I found strange - Oswald had a clear and totally unobstructed view of JFKs full torso in the convertible, traveling directly towards his position in a long, straight line on Houston St. at slow rate of speed. An ideal shot for a sniper.
But instead, Oswald waited until JFK's car had turned on to Elm, at which point, only JFK's head was exposed, and the car was rapidly accelerating away from his position.
Why is it a stretch?