President Barack Obama has ordered that the U.S. flag be flown at half staff at all public buildings and grounds, 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, June 16, 2016.

The incident was the worst mass shooting in U.S. history.

“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.,” the president said in a proclamation Sunday.

When and Why Are the Fermilab Flags at Half Staff?

The flags at Fermilab are lowered to half staff whenever the President of the United States issues a proclamation or executive order requiring such. The flags are also lowered whenever the governor of Illinois issues a proclamation requiring the flag be displayed at half staff because of the death of a present or former Illinois official or the death of a state citizen while serving on active duty in the military.

If you have further questions, please contact the Office of Communication at 630.840.3351.