Amos Euins saw the rifle in the window being fired from the SN. Three witnesses below the SN heard the rifle being fired. Harold Norman heard the rifle bolt action being operated three times after three shots were fired. Three shells were found on the floor of the SN. Bob Jackson and Mrs. Cabell saw what looked like the barrel of a rifle projecting from the SN. The rifle that fired CE399 was found in the SN.
One does not need several witnesses seeing the rifle being fired from the SN to conclude that a rifle was fired from the SN.
Perhaps you should THINK about what the witnesses actually said. None of he witnesses saw a rifle being fired from the SE corner window. Only
one person saw a man in the act that could have been the firing of a rifle....Howard Brennan said that he saw a man AIMING a HUNTING RIFLE out of a window. Brennan said that the man was STANDING and aiming the hunting rifle. Therefore the man was NOT behind the SE corner window.... Because that SE corner window was hot open far enough to allow a man to STAND and aim a rifle down toward Elm street.
Amos Euins saw a "pipe like" thing sticking out of a window
Harold Norman is a blatant liar..... He said that he heard the rifle being operated on the sixth floor above his head but Bonnie Ray Williams and Junior Jarman were right there with Norman and they heard nothing on the floor above their heads. And what's more Norman described the sounds as quote..
" Boom...click...clack...boom...click...clack....boom " Liar Norman also said that he heard the sounds of the shells falling on the floor.... but He did not....Because if he had heard the sounds of the shells falling on the floor the noise he heard would have been ....
Boom...click...PING...clack...boom...click...PING...clack....boom.....