Dom Mclachlan News Today : Breaking News, Live Updates & Top Stories | Vimarsana

welcome to "the whole story." i'm anderson cooper. on may 24th, 2002, a gunman walked into robb elementary school in uvalde, texas, and killed 19 children and two teachers before he was finally killed by police 77 minutes later. it's one of the worst school shootings in u.s. history. what makes it even harder to understand is that 376 law enforcement personnel responded to the scene, but it took them more than an hour before they actually moved to breach the classroom and confront the shooter. they waited while children inside lay injured and dying. over the past year, cnn's shimon p...

walked into robb elementary school in uvalde, texas, and killed 19 children and two teachers before he was finally killed by police 77 minutes later. it's one of the worst school shootings in u.s. history, and what makes it even harder to understand is that 376 law enforcement personnel responded to the scene, but it took them more than an hour before they actually moved to breach the classroom and confront the shooter. they waited while children inside lay injured and dying. over the past year, cnn's shimon prokupecz and his team have been digging for answers and thou sources they h...

teachers weave he was finally killed by police 77 minutes later. it's one of the worst school shootings in u.s. history. 376 law enforcement personnel responded to the scene, but it took them more than an hour before they actually moved to breach the classroom and confront the shooter. they waited while children inside lay injured and dying. over the past year, cnn's shimon prokupecz and his team have been digging for answers and through sources they have obtained the entire investigative case file which includes thousands of documents, hundreds of hours of footage and multiple audio...

Know what every one of our officers did that day. >> you still don't know that? >> we still don't know that. >> a year later, you still don't know? >> we still don't know that. >> uvalde mayor dom mclachlan said he's been unable to make any further personnel changes in the city police department because his investigators are being prevented from viewing any materials from the case file. >> so at 11:39, he knew -- >> right. >> -- that this was an active shooter. >> with sources we obtained the entire case file, hundreds of hours of video evidence, radio transmissions, 911 calls and crucial reco...

>> the room is full of victims. child 911 call. >> want to talk to you about your decision. >> that's pete arredondo, he was chief of the uvalde school police department at the time. >> an opportunity to explain yourself to the parents. >> we're going to do that eventually. >> he was labeled the incident commander by top texas officials and was fired by the school board in august. >> let me get them out before we go in. >> we have victims in there. we don't want any more. >> the four remaining school officers who worked for pete arredondo were eventually suspended after damning reports back in...