Olivia Engel, 6, was one of the 20 children killed on Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook Elementary School in Newtown, Conn. (AP Photo/Engel Family, Tim Nosezo)

Photo by: Tim Nosezo

Olivia Engel, 6, was one of the 20 children killed on Friday, Dec. 14, 2012, when a gunman opened fire at Sandy Hook Elementary School in Newtown, Conn. (AP Photo/Engel Family, Tim Nosezo)