Uvalde Perspectives

 Megan McArdle tweeted this:

I can't say exactly what happened in Uvalde, but having written a book on failure, I'd bet investigation will not reveal one bad decision, but a string of overlapping failures, most of which occurred individually before with no real incident, but collectively became disastrous

— Megan McArdle (@asymmetricinfo) May 27, 2022

Graham Factor had this.

I think both are good perspectives.  I remember Kitty Genovese from the 1960's, where the original story turned out wrong.  It's possible that multiple police forces on the scene and poor communication from the 911 system to the police were factors.  We don't know, and it's too early to say.