A woman is comforted by a police officer at the entrance of Head O'Meadow School, Tuesday, Dec. 18, 2012, in Newtown, Conn. Buses ferrying students to schools were festooned with large green and white ribbons on the front grills, the colors of Sandy Hook. At Newtown High School, students in sweatshirts and jackets, many wearing headphones, betrayed mixed emotions. Adam Lanza walked into Sandy Hook Elementary School in Newtown, Friday and opened fire, killing 26 people, including 20 children, before killing himself. (AP Photo/David Goldman)

Photo by: David Goldman

A woman is comforted by a police officer at the entrance of Head O'Meadow School, Tuesday, Dec. 18, 2012, in Newtown, Conn. Buses ferrying students to schools were festooned with large green and white ribbons on the front grills, the colors of Sandy Hook. At Newtown High School, students in sweatshirts and jackets, many wearing headphones, betrayed mixed emotions. Adam Lanza walked into Sandy Hook Elementary School in Newtown, Friday and opened fire, killing 26 people, including 20 children, before killing himself. (AP Photo/David Goldman)