Uvalde surveillance video shows police lingering in school hallway

Surveillance footage captured the gunman in the Uvalde school shooting entering the building with a AR-15-style rifle and later shows officers in body armor milling in the hallway outside the fourth-grade classrooms where 19 children and two teachers were killed.

https://www.theguardian.com/us-news/2022/jul/12/uvalde-surveillance-video-police-gunman