Surveillance footage captured the gunman in the Uvalde school shooting enter 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.
Original article: https://www.reviewjournal.com/news/nation-and-world/police-strolled-in-hallway-during-uvalde-massacre-video-shows-2606613/