This image provided by the family shows Grace McDonnell posing for a portrait in this family photo taken Aug. 18, 2012. Grace McDonnell was killed Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook elementary school in Newtown, Conn., killing 26 children and adults at the school.

McDonnell Family

This photo provided by the family shows Jessica Rekos. Rekos, 6, was killed Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook Elementary School, in Newtown, Conn., killing 26 children and adults at the school, before killing himself.

Rekos Family

This 2012 photo provided by the family shows Lauren Rousseau. Rousseau was killed Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook Elementary School, in Newtown, Conn., killing 26 children and adults at the school.

Rousseau Family

In this undated photo provided by Mark Sherlach, Mark Sherlach and his wife, school psychologist Mary Sherlach, pose for a photo. Mary Sherlach was killed Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook Elementary School, in Newtown, Conn., killing 26 children and adults at the school.

Mark Sherlach

This Nov. 18, 2012 photo provided by John Engel shows Olivia Engel, 6, in Danbury, Conn. Olivia Engel. Olivia Engel, was killed Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook Elementary School, in Newtown, Conn., killing 26 children and adults at the school.

Tim Nosezo

This 2012 photo provided by the family shows Emilie Alice Parker. Parker was killed Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook elementary school in Newtown, Conn., killing 26 children and adults at the school.

Parker Family