T. A. Gardner
Serial Thread Killer
Were there innocent bystanders there?
Don't know. I do know that most police departments issue subsonic rounds for officer use. Whether that's the case here, I don't know. Subsonic rounds don't have a lot of penetration due to their lower velocity. They were specifically designed to not penetrate much of anything beyond the first thing they hit. Thus, a round penetrating a couple of sheets of drywall would normally have lost sufficient velocity to make it less than lethal.
https://www.omahaoutdoors.com/subsonic-9mm-ammo/
