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Residents gather outside St. Rose of Lima church as bells are rung 26 times and the names of the Sandy Hook Elementary School shooting victims are called over a loudspeaker, in Newtown, Connecticut, on December 14, 2013. Adam Lanza, 20, shot and killed 20 students and 6 teachers before shooting himself on December 14, 2012. AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 525449533 )

Men shovel snow in Newtown, Conn., Saturday, Dec. 14, 2013. Bells tolled 26 times to honor the children and educators killed one year ago in a shooting rampage at Sandy Hook Elementary School as local churches held memorial services. With snow falling and homes decorated with Christmas lights, Newtown looked every bit the classic New England town. But reminders of the private grief were everywhere. (AP Photo/Robert F. Bukaty) ( Connecticut School Shootings )

People pause in silence while church bells ring in honor of the victims of the Sandy Hook massacre, Saturday, Dec. 14, 2013, in Newtown, Conn. Newtown is asking that people honor the victims one the one-year anniversary in ways that are quiet and personal. (AP Photo/Robert F. Bukaty) ( Connecticut School Shootings )

A memorial to those killed at Sandy Hook Elementary stands on a roadside on December 14, 2012 in Newtown, Connecticut. One year ago Adam Lanza shot and killed 20 first graders and six adults at the school. Newtown decided not to hold a public memorial on the anniversary out of respect for victims' survivors, and the town appealed for privacy. (Photo by John Moore/Getty Images) ( 456553467 )

Christmas decorations adorn a business near the former site of Sandy Hook Elementary on December 14, 2012 in Newtown, Connecticut. One year ago Adam Lanza shot and killed 20 first graders and six adults at the school. Newtown decided not to hold a public memorial on the anniversary out of respect for victims' survivors, and the town appealed for privacy. (Photo by John Moore/Getty Images) ( 456553473 )

Signs stand in front of a church near the former site of Sandy Hook Elementary on December 14, 2012 in Newtown, Connecticut. One year ago Adam Lanza shot and killed 20 first graders and six adults at the school. Newtown decided not to hold a public memorial on the anniversary out of respect for victims' survivors, and the town appealed for privacy. (Photo by John Moore/Getty Images) ( 456553483 )

On the first anniversary of the Sandy Hook massacre, firefighters lower the town's flag on Main Street to half-staff in honor of the victims, Saturday, Dec. 14, 2013, in Newtown, Conn. (AP Photo/Robert F. Bukaty) ( APTOPIX Connecticut School Shootings )

A Christmas decoration stands on display near the former site of Sandy Hook Elementary on December 14, 2013 in Newtown, Connecticut. One year ago Adam Lanza shot and killed 20 first graders and six adults at the school. Newtown decided not to hold a public memorial on the anniversary out of respect for victims' survivors, and the town appealed for privacy. (Photo by John Moore/Getty Images) ( 456553621 )

Flowers lie on the ground near the former site of Sandy Hook Elementary on December 14, 2013 in Newtown, Connecticut. One year ago Adam Lanza shot and killed 20 first graders and six adults at the school. Newtown decided not to hold a public memorial on the anniversary out of respect for victims' survivors, and the town appealed for privacy. (Photo by John Moore/Getty Images) ( 456553623 )

A snowplow driver stops to give directions to two women in Newtown, Conn., Saturday, Dec. 14, 2013. Bells tolled 26 times to honor the children and educators killed one year ago in a shooting rampage at Sandy Hook Elementary School as local churches held memorial services. With snow falling and homes decorated with Christmas lights, Newtown looked every bit the classic New England town. But reminders of the private grief were everywhere. (AP Photo/Robert F. Bukaty) ( Connecticut School Shootings )

Fresh snow covers a memorial near the former site of Sandy Hook Elementary school on December 14, 2013 in Newtown, Connecticut. One year ago Adam Lanza shot and killed 20 first graders and six adults at the school. Authorities demolished the school in October. Newtown decided not to hold a public memorial on the anniversary out of respect for victims' survivors, and the town appealed for privacy. (Photo by John Moore/Getty Images) ( 456553637 )

On the first anniversary of the Sandy Hook massacre, Newtown, Conn., a sign is posted under a Christmas tree, Saturday, Dec. 14, 2013. Newtown is asking that people honor the victims in ways that are quiet and personal. (AP Photo/Robert F. Bukaty) ( Connecticut School Shootings )

US President Barack Obama (top) and First Lady Michelle Obama light 26 candles, honoring the 26 students and teachers killed at Sandy Hook Elementary School in Newtown, Connecticut, in the Map Rom of the White House in Washington, DC on December 14, 2013. The Obamas also observed a moment of silence on the one-year anniversary of the shooting. /AFP PHOTO / Saul LOEB/AFP/Getty Images ( 525456672 )

A memorial to massacre victims stands near the former site of Sandy Hook Elementary on December 14, 2012 in Newtown, Connecticut. One year ago Adam Lanza shot and killed 20 first graders and six adults at the school. Newtown decided not to hold a public memorial on the anniversary out of respect for victims' survivors, and the town appealed for privacy. (Photo by John Moore/Getty Images) ( 456553477 )

Balloons fly outside a doctor's office on the first anniversary of the Sandy Hook massacre, in Newtown, Conn., Saturday, Dec. 14, 2013. (AP Photo/Robert F. Bukaty) ( Connecticut School Shootings )

A group of people skate on a frozen pond in Newtown, Conn., Saturday, Dec. 14, 2013. (AP Photo/Robert F. Bukaty) ( APTOPIX Connecticut School Shootings )

US President Barack Obama and First Lady Michelle Obama observe a moment of silence, honoring the 26 students and teachers killed at Sandy Hook Elementary School in Newtown, Connecticut, in the Map Rom of the White House in Washington, DC on December 14, 2013. The Obamas also lit 26 candles on the one-year anniversary of the shooting. AFP PHOTO / Saul LOEB/AFP/Getty Images ( 525449247 )

Residents gather outside St. Rose of Lima church as bells are rung 26 times and the names of the Sandy Hook Elementary School shooting victims are called over a loudspeaker, in Newtown, Connecticut, on December 14, 2013. Adam Lanza, 20, shot and killed 20 students and 6 teachers before shooting himself on December 14, 2012. AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 525449656 )

A flag is flown at half-mast to mark the one-year anniversary of Sandy Hook Elementary School shooting in Newtown, Connecticut, on December 14, 2013. Adam Lanza, 20, shot and killed 20 students and 6 teachers before shooting himself on December 14, 2012. TOPSHOTS/AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 525456669 )

Candles lit by President Barack Obama and First Lady Michelle Obama stand to remember the 26 killed in the Newtown, shooting in Washington, DC, USA, 14 December 2013. The one year anniversary of the Sandy Hook Elementary School shooting in Newtown, Connecticut, which left twenty children and six adults murdered, takes place 14 December. A Newtown city official on 09 December 2013 appealed to the news media to stay away from the community on the first anniversary of a school massacre. The horrific shooting by a lone gunman took the lives of 20 schoolchildren and six educators. The event attracted scores of media to the town of about 27,000 people about 68 kilometres north-east of New York City. EPA/DENNIS BRACK / POOL ( USA OBAMA NEWTON SHOOTING ANNIVERSRY )