The intact window were almost certainly bullet resistant.
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In the 21 min video, we see that the partition windows are easily removed plastic panes, not anything special;
We see several prominently identifiable “rioters” quickly changing their clothes and appearances as they leave the scene;
Every one is not surprised; there is no reaction from the “cops”. There is no attempt to put up crime scene tape or clear the crowd. One cop even steps in the tiny blood spot and smears it around;
We know where the shot came from, as the professional cameraman is waiting to film as the gun pokes out of the closet on the other side of the hall partition;
Then toward the end on the video, several bystanders say, “They are all actors”.
Ashli's window just fell out into the other side complete and without cracks (it seems to me).
I know construction and I know a lot of windows are secured with quarter round glazing strip (or equivalent) ... and there appears to be NO security on that window .... it just fell in .... and I didn't see a lot of bashing at it before it fell in
Bkmk