President Obama has ordered the flags flown at half-staff at the White House and all federal buildings, military posts and naval stations and vessels through Dec. 18 in honor of the victims of the shooting in Newtown, Conn. 

Flags are also being flown at half-staff at the Capitol, as ordered by House Speaker John Boehner (R-Ohio). 

The full proclamation: 

As a mark of respect for the victims of the senseless acts of violence perpetrated on December 14, 2012, in Newtown, Connecticut, by the authority vested in me as President of  the United States by the Constitution and the laws of the
United States of America, I hereby order that the flag of the United States shall be flown at half-staff at the White House  and upon all public buildings and grounds, at all military posts and naval stations, and on all naval vessels of the Federal
Government in the District of Columbia and throughout the United States and its Territories and possessions until sunset, December 18, 2012. I also direct that the flag shall be flown at half-staff for the same length of time at all United States
embassies, legations, consular offices, and other facilities abroad, including all military facilities and naval vessels and stations.

IN WITNESS WHEREOF, I have hereunto set my hand this  fourteenth day of December, in the year of our Lord  two thousand twelve, and of the Independence of the  United States of America the two hundred and thirty-seventh.

Live blog: Updates on the Newtown school shooting