WASHINGTON -- In the immediate aftermath of the shooting of 20 students and six school staff members at Sandy Hook Elementary School in Newtown, Conn., no one knew or could have imagined the magnitude of what had transpired.

Thirty minutes passed between the incident and the first media reports that police were responding to a school shooting. Details were sketchy. The first injuries described in the press were those of a teacher, said to have been shot in the foot -- a seemingly minor wound that gave a momentary sense of relief to those who had tuned in to the unraveling events.

Soon thereafter, however, it became clear that the situation was much worse. Shortly after 11:00 a.m., police confirmed "multiple victims," and by 11:24 a.m. the Hartford Courant was reporting that children were among the dead. It would be around 12:50 p.m. that the number of victims was confirmed at 27.

The frantic unfolding of events on that day gave way to a somber week of vigils, mourning and remembrance. Which in turn turned into months of political debate over how the nation should respond.

And then it all came to an abrupt end.

A Senate vote to expand background checks for gun purchases failed to clear a Republican filibuster. Discouraged family members of Newtown victims, who had come to Washington, D.C., to shame lawmakers into action, appeared behind President Barack Obama in the Rose Garden shortly thereafter. It was a shameful day in Washington, the president said. He pledged to continue pushing the issue.

That was on April 17. No notable legislative advancements have happened since.

The video above retraces those emotional months, from the shooting through the failed vote. And below is a timeline of that frantic day, reconstructed from media and law enforcement reports.

Before 9:30 a.m. -- Adam Lanza shoots and kills his mother, Nancy Lanza, with a .22-caliber Savage Mark II rifle.

Around 9:30 a.m. -- Lanza enters Sandy Hook Elementary, armed with a Bushmaster semiautomatic rifle, a Glock pistol, a Sig Sauer semiautomatic pistol and hundreds of bullets. He enters two classrooms, where he shoots their occupants -- kindergartners and first-graders, and their teachers -- with an assault-style weapon.

9:35:39 a.m. -- The first 911 call is received by Newtown Police, reporting an ongoing shooting at Sandy Hook. The line goes dead after 24 seconds.

9:36:06 a.m. -- Newtown police dispatcher broadcasts shooting at Sandy Hook.

9:37:38 a.m. -- Connecticut State Police dispatched to Sandy Hook.

9:39:00 a.m. -- First Newtown police officer arrives behind Sandy Hook.

9:39:13 a.m. -- Two more Newtown officers arrive.

9:40:03 a.m. -- Last shot heard. Believed to be Lanza committing suicide with the Glock 20 pistol.

9:44:47 a.m. -- Newtown police officers enter the school.

9:46:23 a.m. -- Connecticut State Police arrive.

9:46:48 a.m. -- Connecticut State Police enter the school.

9:50 a.m. -- Hartford Courant reports state police responding to shooting near Sandy Hook, but no mention of the school itself.

10:02 a.m. -- Local outlets confirm police activity in response to a school shooting.

Sometime after 10:02 a.m. -- President Barack Obama is briefed on the situation in Newtown.

10:15 a.m. -- Injuries reported, but details remain minimal.

Around 10:20 a.m. -- Reports of a second shooter remain unconfirmed.

Around 10:30 a.m. -- Authorities report the shooter is dead, and the body is still inside the school.

11:04 a.m. -- Outlets listening to police scanners note that the dispatcher mentioned a teacher being shot in the foot, and are unsure if this is the only injury.

11:12 a.m. -- State police confirm that there are multiple victims.

11:24 a.m. -- Sources confirm that children are among the victims.

Around 12:00 p.m. -- CNN identifies Ryan Lanza as the shooter. Confusion mounts.

After 12:00 p.m. -- State police report that officials from the state Medical Examiner's Office are en route to the scene.

12:52 p.m. -- Outlets around the nation begin to confirm details: 27 dead, including 18 children. The number of children killed would eventually be revised.

2:40 p.m. -- Ryan Lanza posts to his Facebook account, "It wasn't me." Lanza sends further updates saying that he was on a bus traveling home to Hoboken, N.J., from work. Later reports suggest the shooter may have been Lanza's younger brother, 20-year-old Adam.

3:17 p.m. -- Obama addresses the nation from the White House.

3:27 p.m. -- Connecticut Gov. Dannel Malloy (D) speaks about the tragedy.

3:45 p.m. -- State police provide final death count: 27 dead, 20 of them children.

4:38 p.m. -- National outlets confirm Adam Lanza as the only suspected shooter.

Nick Wing contributed reporting to this article.

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  • Connecticut State Police Release Sandy Hook Report

    NEWTOWN, CT - UNSPECIFED DATE: In this handout crime scene evidence photo provided by the Connecticut State Police, shows the Newtown Tehcnology Team ID of Adam Lanza in the bathroom at the suspect's house on Yogananda St. following the December 14, 2012 shooting rampage at Sandy Hook Elementary School, taken on an unspecified date in Newtown, Connecticut . A report was released November 25, 2013 by Connecticut State Attorney Stephen Sedensky III summarizing the Newtown school shooting that left 20 children and six women dead inside Sandy Hook Elementary School. According to the report, a motive behind the shooting by gunman Adam Lanza is still unknown. (Photo by Connecticut State Police via Getty Images)

  • Connecticut State Police Release Sandy Hook Report

    NEWTOWN, CT - UNSPECIFED DATE: In this handout crime scene evidence photo provided by the Connecticut State Police, shows ammunition infrot of a gun safe in the south east bedroom (shooters room) at the suspect's house on Yogananda St. following the December 14, 2012 shooting rampage at Sandy Hook Elementary School, taken on an unspecified date in Newtown, Connecticut . A report was released November 25, 2013 by Connecticut State Attorney Stephen Sedensky III summarizing the Newtown school shooting that left 20 children and six women dead inside Sandy Hook Elementary School. According to the report, a motive behind the shooting by gunman Adam Lanza is still unknown. (Photo by Connecticut State Police via Getty Images)

  • Connecticut State Police Release Sandy Hook Report

    NEWTOWN, CT - UNSPECIFED DATE: In this handout crime scene evidence photo provided by the Connecticut State Police, shows a Bushmaster rifle in Room 10 at Sandy Hook Elementary School following the December 14, 2012 shooting rampage, taken on an unspecified date in Newtown, Connecticut . A report was released November 25, 2013 by Connecticut State Attorney Stephen Sedensky III summarizing the Newtown school shooting that left 20 children and six women dead inside Sandy Hook Elementary School. According to the report, a motive behind the shooting by gunman Adam Lanza is still unknown. (Photo by Connecticut State Police via Getty Images)

  • Connecticut State Police Release Sandy Hook Report

    NEWTOWN, CT - UNSPECIFED DATE: In this handout crime scene evidence photo provided by the Connecticut State Police, shows firearms and ammunition found on or in close proximity to shooters body at Sandy Hook Elementary School following the December 14, 2012 shooting rampage, taken on an unspecified date in Newtown, Connecticut . A report was released November 25, 2013 by Connecticut State Attorney Stephen Sedensky III summarizing the Newtown school shooting that left 20 children and six women dead inside Sandy Hook Elementary School. According to the report, a motive behind the shooting by gunman Adam Lanza is still unknown. (Photo by Connecticut State Police via Getty Images)

  • Pro Gun Control Group Hold Memorial On Anniversary Of Sandy Hook School Shooting

    CHICAGO, IL - DECEMBER 14: Shundra Robinson holds a picture of her son Deno Wooldridge, 18, while speaking at a gathering of gun violence victims and gun control advocates at Cornell Square Park on the anniversary of the Sandy Hook Elementary School shooting December 14, 2013 in Chicago, Illinois. Thirteen people, including a three-year-old boy, were wounded when gunmen opened fire on a crowd gathered at the basketball courts in Cornell Square Park in September. Twenty children and 6 adults were killed when a gunman opened fire at Sandy Hook School. Wooldridge was shot and killed while standing on his grandmother's porch on October 18, 2010. More than 400 people have been murdered in Chicago so far this year, most by gunfire. (Photo by Scott Olson/Getty Images)

  • Second Report On Sandy Hook Shootings Released

    NEWTOWN, CT - UNSPECIFED DATE: In this handout crime scene evidence photo provided by the Connecticut State Police, shows a rifle in the master bedroom in the suspect's house on Yogananda St. following the December 14, 2012 shooting rampage at Sandy Hook Elementary School, taken on an unspecified date in Newtown, Connecticut. A second report was released December 27, 2013 by Connecticut State Attorney Stephen Sedensky III gave more details of the the Newtown school shooting by Adam Lanza that left 20 children and six women educators dead inside Sandy Hook Elementary School after killing his mother at their home. (Photo by Connecticut State Police via Getty Images)

  • Second Report On Sandy Hook Shootings Released

    NEWTOWN, CT - UNSPECIFED DATE: In this handout crime scene evidence photo provided by the Connecticut State Police, shows a Glock 20, 10mm found near the shooter in Room 10 at Sandy Hook Elementary School following the December 14, 2012 shooting rampage, taken on an unspecified date in Newtown, Connecticut. A second report was released December 27, 2013 by Connecticut State Attorney Stephen Sedensky III gave more details of the the Newtown school shooting by Adam Lanza that left 20 children and six women educators dead inside Sandy Hook Elementary School after killing his mother at their home. (Photo by Connecticut State Police via Getty Images)

  • Second Report On Sandy Hook Shootings Released

    NEWTOWN, CT - UNSPECIFED DATE: In this handout crime scene evidence photo provided by the Connecticut State Police, shows firearms and ammunition found on or in close proximity to shooters body at Sandy Hook Elementary School following the December 14, 2012 shooting rampage, taken on an unspecified date in Newtown, Connecticut. A second report was released December 27, 2013 by Connecticut State Attorney Stephen Sedensky III gave more details of the the Newtown school shooting by Adam Lanza that left 20 children and six women educators dead inside Sandy Hook Elementary School after killing his mother at their home. (Photo by Connecticut State Police via Getty Images)

  • Twenty-seven small U.S. flags adorn a large flag on a makeshift memorial on the side of Highway 84 near the Newtown, Conn., town line as residents mourn victims killed by gunman Adam Lanza, Monday, Dec. 17, 2012. On Friday, authorities say Lanza killed his mother at their home and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children, before taking his own life. (AP Photo/Julio Cortez)

  • In this photo taken with a fisheye lens, a message honoring the victims that died a day earlier when a gunman opened fire at an elementary hang from a bridge near Hawley Pond, Saturday, Dec. 15, 2012, in Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/Julio Cortez)

  • Mourners carry ornaments to decorate the Christmas trees at one of the makeshift memorials for the Sandy Hook Elementary School shooting victims, Monday,Dec. 17, 2012 in Newtown, Conn. Authorities say gunman Adam Lanza killed his mother at their home on Friday and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children, before taking his own life. (AP Photo/Mary Altaffer)

  • Crayons sit on a table outside of a barbershop a day after a gunman opened fire at Sandy Hook Elementary School, Saturday, Dec. 15, 2012, in the Sandy Hook village of Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/Julio Cortez)

  • Crayons sit on a table outside of a barbershop a day after a gunman opened fire at Sandy Hook Elementary School, Saturday, Dec. 15, 2012, in the Sandy Hook village of Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/Julio Cortez)

  • Tamara Doherty

    Shop owner Tamara Doherty, paces outside her store just down the road from Sandy Hook Elementary School, Saturday, Dec. 15, 2012, in Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/David Goldman)

  • Tamara Doherty, Jackie Gaudet

    Shop owners Tamara Doherty, left, and Jackie Gaudet, right, meet outside their stores for the first time since being neighbors, just down the road from Sandy Hook Elementary School, Saturday, Dec. 15, 2012, in Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/David Goldman)

  • Kristin Hoyt

    Kristin Hoyt, 18, of Danbury, Conn., ties a balloon to an overpass up the road from the Sandy Hook Elementary School, Saturday, Dec. 15, 2012, in Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/David Goldman)

  • A Newtown, Conn., resident, who declined to give her name, sits at an intersection holding a sign for passing motorists up the road from the Sandy Hook Elementary School, Saturday, Dec. 15, 2012, in Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/David Goldman)

  • A snowflake ornament with the name of 6-year-old Noah Pozner hangs on a Christmas tree at a makeshift memorial in the Sandy Hook village of Newtown, Conn., Monday, Dec. 17, 2012, as the town mourns victims killed in Friday's school shooting. Pozner, who was killed Friday when gunman Adam Lanza opened fire inside the Sandy Hook Elementary School, will be buried Monday. (AP Photo/Julio Cortez)

  • Twenty-seven small U.S. flags adorn a large flag on a makeshift memorial on the side of Highway 84 near the Newtown, Conn., town line as residents mourn victims killed by gunman Adam Lanza, Monday, Dec. 17, 2012. Authorities say Lanza killed his mother at their home and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children, before taking his own life, on Friday. (AP Photo/Julio Cortez)

  • Jamie Duncan, 16, of Newtown, Conn., lights a candle at one of the makeshift memorials for the Sandy Hook Elementary School shooting victims, Monday,Dec. 17, 2012 in Newtown, Conn. Authorities say gunman Adam Lanza killed his mother at their home on Friday and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children, before taking his own life. (AP Photo/Mary Altaffer)

  • A mourner carries a giant Winnie the Pooh stuffed animal to place at one of the makeshift memorials for the Sandy Hook Elementary School shooting victims, Monday,Dec. 17, 2012 in Newtown, Conn. Authorities say gunman Adam Lanza killed his mother at their home on Friday and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children, before taking his own life. (AP Photo/Mary Altaffer)

  • A hearse arrives at B'nai Israel Cemetery with the body of Noah Pozner, a six-year-old killed in an elementary school shooting, during funeral services, Monday, Dec. 17, 2012, in Monroe, Conn. Authorities say gunman Adam Lanza killed his mother at their home on Friday and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children, before taking his own life. (AP Photo/Julio Cortez)

  • People arrive at B'nai Israel Cemetery during burial services for Noah Pozner, a six-year-old killed in the Sandy Hook Elementary School shooting, Monday, Dec. 17, 2012, in Monroe, Conn. Authorities say gunman Adam Lanza killed his mother at their home on Friday and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children, before taking his own life. (AP Photo/Julio Cortez)

  • Veronika Pozner

    Veronique Pozner waves to the assembled media as she leaves after a funeral service for her 6-year-old son Noah Pozner, Monday, Dec. 17, 2012, in Fairfield, Conn. Noah Pozner was killed when Adam Lanza walked into Sandy Hook Elementary School in Newtown, Conn., Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Sandy Hook Elementary School Shooting

    Twenty seven wooden stand in a yard down the street from the Sandy Hook School December 16, 2012 in Newtown, Connecticut. Twenty-six people were shot dead, including twenty children, after a gunman identified as Adam Lanza opened fire at Sandy Hook Elementary School. Lanza also reportedly had committed suicide at the scene. A 28th person, believed to be Nancy Lanza, found dead in a house in town, was also believed to have been shot by Adam Lanza. (Photo by Spencer Platt/Getty Images)

  • Sandy Hook Elementary School Shooting

    Newtown residents Claire Swanson, Kate Suba, Jaden Albrecht, Simran Chand and New London, Connecticut residents Rachel Pullen and her son Landon DeCecco, hold candles at a memorial for victims on the first Sunday following the mass shooting at Sandy Hook Elementary School on December 16, 2012 in Newtown, Connecticut. (Photo by Mario Tama/Getty Images)

  • Sandy Hook Elementary School Shooting

    U.S. President Barack Obama waits to speak at an interfaith vigil for the shooting victims from Sandy Hook Elementary School on December 16, 2012 at Newtown High School in Newtown, Connecticut. (Photo by Olivier Douliery-Pool/Getty Images)

  • Sandy Hook Elementary School Shooting

    Eknoor Kaur, 3, stands with her father Guramril Singh during a candlelight vigil outside Newtown High School before an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Sandy Hook Elementary School Shooting

    New London, Connecticut resident Rachel Pullen (C) kisses her son Landon DeCecco at a memorial for victims near the school on the first Sunday following the mass shooting at Sandy Hook Elementary School on December 16, 2012 in Newtown, Connecticut. (Photo by Mario Tama/Getty Images)

  • Sandy Hook Elementary School Shooting

    US President Barack Obama speaks during a memorial service for the victims and relatives of the Sandy Hook Elementary School shooting on December 16, 2012 in Newtown, Connecticut. Twenty-six people were killed when a gunman entered Sandy Hook Elementary and began a shooting spree. AFP PHOTO/Mandel NGAN

  • Sandy Hook Elementary School Shooting

    A woman covers her face as US President Barack Obama reads out the names of children killed during Sandy Hook Elementary School shooting at a interfaith memorial for victims and relatives at the Newtown High School on December 16, 2012 in Newtown, Connecticut. Twenty-six people were killed when a gunman entered Sandy Hook Elementary and began a shooting spree. AFP PHOTO/Mandel NGAN

  • Sandy Hook Elementary School Shooting

    A woman pays respects at a memorial outside of St. Rose of Lima Roman Catholic Church, Sunday, Dec. 16, 2012, in Newtown, Conn. On Friday, a gunman allegedly killed his mother at their home and then opened fire inside the Sandy Hook Elementary School in Newtown, killing 26 people, including 20 children. (AP Photo/Julio Cortez)

  • Sandy Hook Elementary School Shooting

    Residents wait for the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Evan Vucci)

  • Sandy Hook Elementary School Shooting

    Cheryl Girardi, of Middletown, Conn., kneels beside 26 teddy bears, each representing a victim of the Sandy Hook Elementary School shooting, at a sidewalk memorial, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children.(AP Photo/David Goldman)

  • Sandy Hook Elementary School Shooting

    Connecticut State Police officers respond to a bomb threat outside of St. Rose of Lima Roman Catholic Church, Sunday, Dec. 16, 2012, in Newtown, Conn. Worshippers hurriedly left the church Sunday, not far from where a gunman opened fire Friday inside the Sandy Hook Elementary School in Newtown. (AP Photo/Julio Cortez)

  • Sandy Hook Elementary School Shooting

    Ava Staiti, 7, of New Milford, Conn., looks up at her mother Emily Staiti, not pictured, while visiting a sidewalk memorial with 26 teddy bears, each representing a victim of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/David Goldman)

  • Sandy Hook Elementary School Shooting

    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. (AP Photo/Courtesy of Rekos Family)

  • Sandy Hook Elementary School Shooting

    A U.S. flag flies at half staff outside the Newtown High School before President Barack Obama is scheduled to attend a memorial for the victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/David Goldman)

  • Sandy Hook Elementary School Shooting

    David Freedman, right, kneels with his son Zachary, 9, both of Newtown, Conn., as they visit a sidewalk memorial for the Sandy Hook Elementary School shooting victims, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/David Goldman)

  • Sandy Hook Elementary School Shooting

    A man reacts at the site of a makeshift memorial for school shooting victims in Newtown, Conn., Sunday, Dec. 16, 2012. A gunman opened fire at Sandy Hook Elementary School in the town, killing 26 people, including 20 children before killing himself on Friday. (AP Photo/Charles Krupa)

  • Sandy Hook Elementary School Shooting

    People wait in line to attend an interfaith vigil with President Barack Obama, Sunday, Dec. 16, 2012, in Newtown, Conn. A gunman walked into Sandy Hook Elementary School in Newtown Friday and opened fire, killing 26 people, including 20 children. (AP Photo/Jason DeCrow)

  • Sandy Hook Elementary School Shooting

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012 at Newtown High School in Newtown, Conn. A gunman walked into Sandy Hook Elementary School Friday and opened fire, killing 26 people, including 20 children. (AP Photo/ Evan Vucci)

  • Sandy Hook Elementary School Shooting

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the school Friday and opened fire, killing 26 people, including 20 children. President Barack Obama is to scheduled to speak at the event. (AP Photo/ Evan Vucci)

  • Sandy Hook Elementary School Shooting

    Residents greet each other before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. A gunman walked into the elementary school Friday and opened fire, killing 26 people, including 20 children. President Barack Obama is scheduled to speak during the vigil. (AP Photo/ Evan Vucci)

  • Sandy Hook Elementary School Shooting

    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. (AP Photo/Courtesy of the McDonnell Family)

  • Sandy Hook Elementary School Shooting

    This Nov. 18, 2012 photo provided by John Engel shows Olivia Engel, 6, in Danbury, Conn. 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. (AP Photo/Engel Family, Tim Nosezo)

  • Emilie Alice Parker

    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. (AP Photo/Courtesy of the Parker Family)

  • Noah Pozner

    This Nov. 13, 2012 photo provided by the family via The Washington Post shows Noah Pozner. The six-year-old was one of the victims in the Sandy Hook elementary school shooting in Newtown, Conn. on Dec. 14, 2012. (AP Photo/Family Photo)

  • Sandy Hook Elementary School Shooting

    This handout image provided by ABC News, shows Nancy J. Lanza mother of suspected mass shooter Adam Lanza at an unspecified time and place. Twenty six people were shot dead, including twenty children, after a gunman identified as Adam Lanza opened fire at Sandy Hook Elementary School. Lanza also reportedly had committed suicide at the scene. A 28th person, believed to be Nancy Lanza was found dead in a house in town, was also believed to have been shot by Adam Lanza. (Family of Nancy Lanza / ABC News / Getty Images)

  • Sandy Hook Elementary School Shooting

    <a href="http://www.huffingtonpost.com/huff-wires/20121215/us-school-shooting-victims/?utm_hp_ref=homepage&ir=homepage">Lauren Rousseau, 30,</a> had started a job as a full-time teacher at Sandy Hook Elementary School this fall. She was killed in the Dec. 14 shooting at the school.

  • Sandy Hook Elementary School Shooting

    School psychologist Mary Sherlach, 56, was killed during an attempt to stop gunman Adam Lanza during the Dec. 14 mass shooting at Sandy Hook Elementary School in Newtown, Conn. <a href="http://www.huffingtonpost.com/huff-wires/20121215/us-school-shooting-victims/?utm_hp_ref=homepage&ir=homepage">Sherlach and school principal Dawn Hochsprung</a> reportedly both lunged at Lanza in an attempt to protect the school's students and teachers. Both Sherlach and Hochsprung were killed.