BELFAST — Concurrent events in the city will commemorate the Sept. 11, 2001, al Qaeda terrorist attacks that killed 2,977 people at the World Trade Center in New York, the Pentagon in Washington, D.C., and in a field in Shanksville, Pennsylvania.

The public is invited to participate in remembering the worst attacks in history on U.S. soil.

In an event originated by the late Ray Hall and then chaired for several years by the late Gary Philbrick, the Belfast Lions Club will conduct its annual 9/11 Memorial Walk across the Veterans Memorial Bridge, stepping off at 8:46 a.m. to walk three times across the bridge and back.

Participants will gather at 8:30 a.m. at the west end of the bridge for a brief ceremony before stepping off at 8:46 a.m., the time the first hijacked airplane hit one of the World Trade Center towers.

All are welcome to join — individuals and families — including strollers, and dogs on leashes. Participants are invited to carry flags and 9/11 tributes, but no political signs or messages will be permitted.

Members of Randall Collins Post 3108, Veterans of Foreign Wars, and Frank D. Hazeltine American Legion Post 43 will conduct a brief ceremony at 8:30 a.m. at the VFW, 34 Field St., then walk to the Legion Hall at 143 Church St. for a second ceremony.

They then will walk down Main Street to the waterfront for a third ceremony with first responders, including leaders and members of the Belfast Police and Fire departments and the Waldo County Sheriff’s Office, as well as local Boy Scouts.

All are welcome to join in any or all of the remembrance ceremonies.

The Sept. 11 attacks (often referred to as 9/11), were intended to be a series of four coordinated terrorist attacks Tuesday morning, Sept. 11, 2001. Courageous passengers in a fourth plane, believed to have been destined for the White House, foiled that attack by overpowering the terrorists and taking the plane down; it crashed in a field in Pennsylvania, killing all aboard.

The attacks resulted in 2,977 fatalities, over 25,000 injuries, and substantial long-term health consequences, in addition to at least $10 billion in infrastructure and property damage.

Sept. 11, 2001, marked the single deadliest terrorist attack in human history and the single deadliest incident for firefighters and law enforcement officers in the history of the United States, with 343 and 72 killed, respectively.