There are so many ways to get involved, and every American can do something. To learn more about the opportunities where you live, just go online and visit . Even the smallest act of service, the simplest act of kindness, is a way to honor those we lost; a way to reclaim that spirit of unity that followed 9/11. On this 10th anniversary, we still face great challenges as a nation. We're emerging from the worst economic crisis in our lifetimes. We're taking the fight to al Qaeda, ending the war in Iraq and starting to bring our troops home from Afghanistan. And we're working to rebuild the foundation of our national strength here at home. None of this will be easy. And it can't be the work of government alone. As we saw after 9/11, the strength of America has always been the character and compassion of our people. So as we mark this solemn anniversary, let's summon that spirit once more. And let's show that the sense of common purpose that we need in America doesn't have to be a fleeting moment; it can be a lasting virtue—not just on one day, but every day.