It's hopeless. But add in the fired bullet casings found by the window, the fact that all the 7th floor windows were closed and the only open window above Norman's head is the SN window, Norman heard the operation of a rifle, and a rifle was found on the 6th floor etc. It's all just an assumption though that what he heard was shots. LOL. If a person enters a sealed room with a Big Mac, and exits without the Big Mac and no Big Mac is found in the room, we can't conclude this person ate it. We can only "assume" they did so. No logical inference from the totality of facts and evidence is ever permitted by defense attorney contrarians defending a guilty client. Of all the outrageous arguments made by these loons, the notion that someone who hears three loud noises that he identifies as shots above his head at the moment someone is shot can only be deemed his assumption that he heard the rifle fired ranks high on the list of kookery.
The 3 clowns had to say they heard something from above. This is because of the last known person to be on the sixth floor, remember he was one of the clowns.
No, not Ronald McDonald, and not a Big Mac. This pothead was so high he left his Dr. Pepper along with his bag of chicken bones. The pothead admits he was on the Sixth Floor, he admits it was his pop and bag of chicken bones and says no one else was present there while he ate his lunch.
So now you can use the Big Mac logic, only this clown admits the evidence was left by him. He also said he did not see Oswald, but I bet Richard will say Oswald was in one of the boxes.