Jackson saw the rifle and took a picture of the window because he had seen the rifle from that window.
Still waiting for “Richard” to produce this elusive Jackson photo, because this would be news to Jackson as well.
And “Richard” wonders why nobody takes him seriously…
There is zero doubt of the presence of someone in that window at the moment of the assassination.
There is nothing about anything that has “zero doubt” — even if there was a photo of it.