American remembered the 9/11 attacks on its 21st anniversary on Sunday.
9/11 attack was the most brutal terrorist attack to happen on U.S. soil claiming around 3000 lives.
President Joe Biden spoke at the Pentagon and said that they'll continue working on rooting out terrorists.
People came together to remember and read the names of the people that lost their lives.
The New York City memorial service began with a bell ringing and a moment of silence.
Americans still feel a mix of emotions remembering the attacks and lass of loved ones two decades ago.
The effects of 9/11 are still felt in American politics and public life today, in both subtle and obvious ways.