Biden pays tribute to the Queen for her support after 9/11 attacks | USA TODAY

While marking the 21st anniversary of the 9/11 attacks, President Joe Biden paid tribute to Queen Elizabeth II for her support of the U.S. that day.
President Joe Biden and other political leaders paid tribute Sunday to the fallen of 9/11, somberly marking the 21st anniversary of the deadliest terrorist attack in the nation's history.

After a wreath-laying ceremony at the Pentagon, Biden said 9/11 changed the United States in countless ways, but did not damage the character of the American people.