Residents hold a candlelight vigil outside Newtown High School after President Barack Obama delivered remarks at 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. (AP Photo/ Evan Vucci)
Residents look on during 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. (AP Photo/ Evan Vucci)
U.S. Sen. Joseph Lieberman, I-Conn., top right, Rep. Rosa DeLauro, D-Conn., left, Sen-elect Chris Murphy, center, and Lt. Gov. Nancy Wyman, right, wait for the arrival of President Barack Obama before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting inside the Newtown High School auditorium in Newtown, Conn., Sunday night, Dec. 16, 2012. (AP Photo/The Hartford Courant, Stephen Dunn, Pool)
President Barack Obama pauses as he delivers a speech during 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. (AP Photo/Evan Vucci)
Residents look on during 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. (AP Photo/Evan Vucci)
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. (AP Photo/ Evan Vucci)
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. (AP Photo/ Evan Vucci)
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. (AP Photo/Evan Vucci)
Residents greet each other before 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. (AP Photo/ Evan Vucci)
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. (AP Photo/ Evan Vucci)
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. (AP Photo/Evan Vucci)
Residents greet each other before 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. (AP Photo/ Evan Vucci)
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.(AP Photo/David Goldman)
People arrive on a school bus at Newtown High School for a memorial vigil attended by President Barack Obama for the victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. (AP Photo/David Goldman)
Residents greet each other before 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)
President Obama speaks during 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)
A couple pays their respects at one of the makeshift memorials in honor of the victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012 in Newtown, Conn. (AP Photo/Mary Altaffer)
Kate Suba, left, Jaden Albrecht, center, and Simran Chand pay their respects at one of the makeshift memorials in honor of the victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. (AP Photo/Mary Altaffer)