queen elizabeth celebrates 70 years on the throne. we re live with a preview of the upcoming celebrations. live from cnn center, this is cnn newsroom, with kim brunhuber. the mass shooting at an elementary school in uvalde, texas was an unthinkable tragedy. 19 young students and two teachers gunned down. but now we re hearing more chilling details about police failures on that day. the incident commander, police chief arredondo did not have a police radio on him at the time. we re also getting new information about a desperate 911 call by a 10-year-old student while the shooter stalked the building. reporter: new questions raised in the investigation of the deadly school shooting in uvalde. school district police chief arredondo didn t have a radio with him at the scene, something that may have hindered his ability to communicate directly with police dispatcher. i am told that this person did not have radio communication, and i don t know as to why. reporter: gut
arredondo didn t have a radio with him at the scene, something that may have hindered his ability to communicate directly with police dispatcher. i am told that this person did not have radio communication, and i don t know as to why. reporter: gut aiierrez learn that he didn t have a radio. and we have reached out to confirm if he had a radio but have not heard back. arredondo has been criticized for not making the call to send officers sooner into the classroom where the gunman killed 19 students and to teachers. active shooter protocol says you go in. you go in immediately. reporter: gutierrez says he wants to know more about what