Communities, churches and more will commemorate the 21st anniversary by flying the flag, observing moments of silence and conducting memorial services and events to honor those who lost their lives.
Events Across the Chicago Area Mark 20th Anniversary of September 11 Attacks Saturday nbcchicago.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nbcchicago.com Daily Mail and Mail on Sunday newspapers.