DALLAS — As law enforcement officers hung back outside Khloie Torres’ fourth-grade classroom in Uvalde, Texas, she begged for help in a series of 911 calls, whispering into the phone that there were “a lot” of bodies and telling the operator: “Please, I don’t want to die. My teacher is dead. Oh, my God.”

At one point, the dispatcher asks Khloie if there are many people in the room with the 10-year-old, who ultimately survived.

“No, it’s just me and a couple of friends. A lot…