I resigned from one of the largest PDs in Texas in 2005. I have been through the departments active shooter training, called active rescue. What happened in Uvalde is not how I was trained, nor how I would have responded. Responding to an active shooter, especially at a school, you go with the mindset that someone is getting shot, whether it is them or me. Until that happens you aren't stopping. You are not tactically clearing room by room if you hear shots. You go straight to where the shots are at. If you go down, LEO behind you jumps over you and engages. This goes on until shooter is down.

There are also other tools at your disposal to regain a tactical advantage. I would not be waiting on a ballistic shield. That said, if one was there then of course use it. Flash bang the room prior to entry. Shit pump the room full of tear gas and make entry.

No way in hell could I ever live with myself waiting outside.

Rake the windows to remove the blinds to see in the room as several offices cover each window.

If there isn't a way, you find away.