Watch the entire ceremony held at Heroes Park in Arlington.

The mournful sound of bagpipes could be heard in southwest Arlington Friday morning, when community members gathered to remember the victims of the Sept. 11, 2001 terrorist attacks that touched a nation.

Arlington Mayor Jeff Williams, Fire Chief Don Crowson and Police Chief Will Johnson presided over a solemn 9/11 ceremony at Heroes Park, a memorial that honors the City of Arlington's Police and Fire departments and commemorates those fallen in the line of duty.

Twenty-three police officers were killed along with 37 Port Authority Police Officers and 15 emergency medical technicians during the terrorist attacks.

During the ceremony, two hook and ladder trucks held a suspended American flag to mark entry to the area, and officers' badges bore black tape symbolizing lost comrades. Uniformed personnel and honor guard members saluted as another American flag was lowered to half-staff amid the bugle strains of "Taps.