And it takes 40 more minutes from Khloie giving details to authorities until a strike team burst into the room, challenging the gunman at 12:50 p.m. CNN has heard this 911 call, and others made by the same girl and classmates, whispering information and pleading for help.And agencies have blamed each other in changing narratives since the massacre on May 24, for not following up on the initial attempt to go into the classroom when the gunman fired back, to treating the suspect as barricaded but not an active threat, and long waits for equipment and specialist personnel.Texas’ top cop, director of the Department of Public Safety Col. Steven McCraw, has acknowledged failures, most recently to bereaved families last week, but insisted his department as a whole did not fail the community.CNN obtained the calls from a source and is using excerpts with the approval of Khloie’s parents.Have y’all captured the person?” the fourth grader asks at 12:12 p.m. And a few minutes later, “You want me to open the door now?” Time and again Khloie is told by the dispatcher to stay quiet, to keep her terrified and injured friends quiet, and to wait."