On Thursday's broadcast of CNN's "Situation Room," Texas Department of Public Safety Spokesman and Lt. Christopher Olivarez acknowledged that best practices call for police to disable an active shooter as soon as they can, but that officers inside the school in Uvalde didn't know where the shooter was and "if they proceeded any further not knowing where this suspect was at, they could have been shot, they could have been killed, and, at that point, that gunman would have had an opportunity to kill other people inside that school. So, they were able to contain that gunman inside that classroom so that he was not able to go to any other portions of the school to commit any other killings."