New Sandy Hook Elementary prepares to open its doors 4 years after tragedy

The new Sandy Hook Elementary School hosted a media open house in July in Newtown, Conn. (Photo by Mark Lennihan/Associated Press)
Sandy Hook Elementary geared up for the first day of school Monday, Aug. 29, nearly four years after a gunman killed 20 students and six teachers.
Students will be entering a brand-new school for the first time, located at the same site as the scene of the tragedy.
The original building in Newtown, Conn. was demolished in 2013 after Adam Lanza went on a sho