Wrong. Many people were in the upper floors overlooking the motorcade, thanks to the secret service not locking down the buildings. Made for a perfect ambush, which is but one proof of conspiracy among hundreds.
Amazing fact often overlooked by dumb statists like you: Oswald was the ONLY US Marine to ever defect to the USSR and return (without any consequences...strange no?), yet he was not apprehended prior to JFK’s visit. Amazingly, the only Marine to ever defect and return just happens to work at a building above the route, is well known to authorities, but is not picked up.
MAGICAL!!!
Amazingly I never considered this before. Oswald was known to the FBI and CIA for a string of anti American actions (defection to Soviet Union, visits Mexico in '63 looking for a visa to Cuba and the Soviet Union, in a Fair Play for Cuba organization in New Orleans, Oswald declared himself a Marxist, etc.).
He's working in a building that JFK is going to pass right by yet the Secret Service doesn't do a thing to intervene, contrary to agency policy. It's almost as if people within in the government wanted JFK to die. Odd....