A couple of weeks after the assassination, Roy Truly was interviewed by a reporter from the magazine US News and the reporter quoted Truly as saying that Lee Oswald was sitting at a table in the second floor lunchroom, drinking a coke, when DPD officer Baker confronted him.
It would not matter if LHO was standing up, sitting down or standing on his head...the idea that he just decided to run down to the lunchroom and calmly get a nice refreshing soda after supposedly shooting at the president and hiding a rifle is just plain silly.
Now I understand that Gerald Ford performed the feat of starting at the 6th floor stairs and clomped down to the 2nd floor lunchroom in 40 seconds. ....so what?