The report starts by describing problems with the school itself, including that the fence was not tall enough to stop the killer. Most schools around here in Delaware are not fenced in.
Problems with the doors not locking are more concerning---including to the building and to one of the attached classrooms. That they have to be locked from the hallway also seems to be a problem; push-button locks from inside seem like they'd be faster.
The school relied on a cell phone alert app to spread the word; in addition to having had almost 50 recent low-level alerts, people were apparently not taking them too seriously or acting too quickly--if they even had their phones handy and had noticed the alert. Teachers actually get reprimanded for being on their phones around here. A coach outside alerted the school as she ran in--and the principal attempted to use the app, but the school had bad internet service and she struggled. If you know it's a REAL THREAT, get on that intercom and make it loud and clear.
The rest I had already heard/seen, for the most part: no communication between the various agencies arriving (mostly due to no one stepping up--Arredondo said he was responding as an officer and therefore did not give himself a "title" upon arriving) but also due to bad radios, etc. Arredondo apparently had a stash of radios that would work together, but dropped the bag in his rush to get inside.
Many people who interacted with the killer, including other customers at the gun shop and his online associates, said he gave off "school shooter" vibes. But he apparently passed a background check.
To me, the real problem is not the size of the fence or whether an alert app worked---it's that disturbed teenagers have such easy access to assault rifles. That's problem number 1. Problem number 2 was the cluster of cowards that stood around for 73 minutes.
[link:
https://www.cnn.com/interactive/2022/07/us/uvalde-report-full-document/|