Text Messages Give Glimpse into Horror of School Shooting

From under her teacher's desk, 17-year-old Hannah Carbocci called her older sister after a bullet pierced a wall of her classroom.
Someone was hurt, and someone else was screaming, and her 19-year-old sister Kaitlin was at work not picking up her phone.
So Hannah sent her a text, and over several excruciating minutes they shared 77 short messages.