If you look at the top of the fence where it touches the brick you can see where the squirrel has put one paw on the top. The hawk reacted by spreading its wings and tail as far as they can go. It was more than the hawk could take. What happened next was that the hawk took off so quick I did not get it and flew to the back so was out of sight immediately. Time stamp here is still 4:52.
Adult Cooper's Hawk (Accipiter cooperii)
Fox Squirrel (Sciurus niger)