The Rock Island Arsenal held a ceremony to remember the civilians and first responders who were killed.
The All Saints Catholic School Choir performed for the police, military, firefighters, elected officials, and civilians at this years ceremony.
Over 2,900 flags, one for each person killed in the attacks, were placed in a field near the 9/11 memorial on Arsenal Island.
Major General David Wilson says the ceremony was also for military service members killed in the “war on terror” since 9/11.
"We may never forget those who gave their last full measure of devotion on this day, 22 years ago, and those who died in service ever since. I hope and pray that all of them have found eternal rest."
Family members of some of those service members helped lay a wreath, before the 21-gun salute, a moment of silence, and the playing of taps.
