The following post appeared on the White House Blog on Sept. 8, 2012.

President Obama marks the eleventh anniversary of the September 11th attacks by remembering the innocent lives lost, and honoring the first responders and men and women in uniform who have served and sacrificed to keep our country safe.

In the difficult years following the attacks, the United States has come back stronger as a nation, decimated the leadership of al-Qaeda, ensured that Osama bin Laden will never attack America again, and strengthened our alliances across the world.

The President has signed a proclamation making Friday, September 7 through Sunday, September 9, 2012, National Days of Prayer and Remembrance.

To join that commemoration, you can sign up for a service opportunity near you at Serve.gov.