The children were too young to understand what it meant when they heard the gunfire Friday outside their classroom at Sandy Hook Elementary School in Newtown, Connecticut, said kindergarten teacher Janet Vollmer.

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A state representative whose district includes Sandy Hook is proposing a 10 percent tax on all video games that are rated Mature.

Principal Dawn Lafferty Hochsprung's career seemed to be peaking when she became principal two years ago of Sandy Hook Elementary School in Newtown, Connecticut.

Courtesy CNN

As the family of slain Sandy Hook school psychologist Mary Sherlach mourned her death, Trooper Orlando "Lonny" Mo was the one who brought back her car and personal belongings.

Screengrab from ABC news video

Friday morning, Adam Lanza walked into Sandy Hook Elementary School in Newtown, Connecticut, dressed in 'black battle fatigues and a military vest' and began firing.

WPTV

Members of the Los Angeles Lakers and the crowd observe a moment of silence for the victims of the mass school shooting at Sandy Hook Elementary School in Newtown, Connecticut, before the start of their game against the Washington Wizards.

Adam Lanza stayed at home mostly, a witness said, playing video games such as 'Call of Duty.'

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Gun stocks rose Wednesday, even as President Obama called on Congress to pass an assault weapon ban.

President Obama got emotional, as he spoke of the tragedy that cut young lives short.

A woman holds a child as people line up to enter the Newtown Methodist Church near the the scene of an elementary school shooting on December 14, 2012 in Newtown, Connecticut.

Douglas Healey/Getty Images

Police escort parents leaving staging area after being reunited with their children following a shooting at Sandy Hook Elementary School, Newtown, Connecticut.

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 Shooting At Elementary School In Newtown, Connecticut.

By: Douglas Healey

Map locates Newtown, Conn.

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Connecticut State Police walk on Dickson Street from the scene of an elementary school shooting on December 14, 2012 in Newtown, Connecticut.

Douglas Healey/Getty Images

18 children were among those killed when a gunman entered Sandy Hook Elementary School and began firing.

WVIT

A shooting at a Connecticut elementary school happened on Dec. 14, 2012

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WPTV

Connecticut State Police responded to reports of a shooting at a Newtown elementary school Friday, Dec. 14, 2012, in southwestern Connecticut, according to police spokesman.

CTNow/CNN

Connecticut State Police responded to reports of a shooting at a Newtown elementary school Friday, Dec. 14, 2012, in southwestern Connecticut, according to police spokesman.

CTNow/CNN

Connecticut State Police responded to reports of a shooting at a Newtown elementary school Friday, Dec. 14, 2012, in southwestern Connecticut, according to police spokesman.

CTNow/CNN

Woman talks on phone as she waits to hear about her sister, a teacher, following shooting at Sandy Hook Elementary School, Newtown, Connecticut

AP Graphics Bank

Connecticut State Police responded to reports of a shooting at a Newtown elementary school Friday, Dec. 14, 2012

CNN