By court standards no one can prove that shots were fired from the 6th floor sniper's nest. The seven closest witnesses establish reasonable doubt. 3 black men and 4 white women were within about 40 ft. of the alleged sniper's nest. That's less then the distance across the average American Home. They all should have heard the same thing. They are:
Harold Norman- 5th floor directly under sniper's nest- Boom click click boom click click boom. That's what Harold Norman said he heard. He heard the shells hitting the floor. Cement dust fell on head from a vibrating building. The shots came directly above his 5th floor window. Harold's sequence should have an extra click click since an extra round was jacked into the chamber but, not fired.
Bonnie Ray Williams- About the same as Harold Norman.
James Jarman, jr- He didn't hear shots from above on the sixth floor. He heard shots from low and to the left.
Vickie Adams- Fourth floor 3rd set of windows- heard shots coming from the west- Grassy Knoll
Dorothy May Garner- Heard shots from the west
Elsie Dorman- Heard shots from the direction of the Court Records Building
Sandra Styles- Didn't know where the shots came from but not above
This is why Oswald had to die. Otherwise he would have walked at a trial.