Inside Building 12, Nikolas Cruz, a former student, had already shot 24 people on the first floor, 11 of them fatally. Cruz climbed the stairs to the third floor, where he came upon a group of students, including several whose teacher had accidentally locked them out of the classroom after the fire alarm. As the students tried to run, Cruz fired his weapon, an AR-15-style rifle. Jaime Guttenberg, a freshman, was a few feet away from a stairwell when a bullet entered her back, severing her spinal cord and killing her. Another student, Anthony Borges, lay in a pool of his own blood, shot through the lungs, legs, and torso. Borges says that as he lay there, he wondered, Where are the cops?