I paused it frame by frame and I could not see a shooter
Very puzzling.
https://theresistance.video/watch?id=5ff63502f23a18318ceb28a7
In the room she’s facing into, she’s standing in the right window he’s ahead and to the left at a doorway or hallway peeking out, then you see him step out some and lift his gun, then back behind the corner/wall. He pulls gun, she falls backwards out of window. Police behind her come back with drawn rifle because of the shot, then they give a closed fist stop/stand down thing.
There's only a couple of frames and no frame is clear, but I think it's the guy down the hallway here. Easy to miss with a flag in the way at the most opportune moment.