U.S. President Joe Biden is ending this day of remembrance by paying his respects at the National Pentagon 9/11 Memorial.
READ MORE: President Joe Biden commemorated the 20th anniversary of September 11, 2001, on Saturday with three somber, silent events as he visited the three sites of the worst terrorist attack in modern history.
Biden, along with first lady Jill Biden, attended ceremonies at the places where four planes and 19 hijackers started America’s 20-year involvement in Afghanistan. His first stop, in New York City, came amid beefed-up security, city and state officials said, though Mayor Bill de Blasio stressed that there are “no specific and credible threats” against New York.
In prerecorded comments, Biden used the grave occasion to again call for unity in an increasingly divided America.
“Unity is what makes us who we are,” he said. “America at its best — to me, that's the central lesson of September 11th — is that, at our most vulnerable, in the push and pull of all that makes us human, in the battle for the soul of America, unity is our greatest strength. Unity doesn't mean we have to believe the same thing. We must have a fundamental respect and faith in each other and in this nation.”
He began his day in New York City, at the site of the World Trade Center, where two planes crashed into the north and south towers on that sunny September morning two decades ago.