shattering the window. the alarm startles principal hochsprung and mary sherlach. they come running and are immediately killed. he turns left away from the auditorium and toward the kindergarten and first grade classrooms. he heads to the classroom of lauren rousseau. she and 14 kids are shot and killed. he heads to another room. two other teachers rachel devino and anne marie murphy always are killed. the horror is over in ten minutes, they bleerchlt lanza shoots himself in the head as they stormed in. the bush h master was used on the school in its entirety and the handgun was used to take his own life. authorities say that although adam lanza fired his rifle hundreds of times inside the school, he had more ammunition