JFK assassination witness Arnold Rowland describes seeing a gunman at a different window
https://www.youtube.com/watch?v=4y9_d9L6NOU
I had no idea there was a eyewitness describing a gunman at that window, where I know the second shot that hit Kennedy in the back. There is a black & white photo that shows this shooter
This fits the video above
Expert Witness to the Kennedy assassination - Killed
https://www.youtube.com/watch?v=chtGj3vKCUg