The anniversary will be commemorated on Friday with ceremonies featuring the reading of victims’ names, moments of silence, wreath-laying, flag displays and vigils at major memorial sites.

Families of victims of the September 11 attacks have begun gathering at the World Trade Center in New York and the Pentagon in Washington, DC, as the United States marks the 25th anniversary of the attacks that killed 2,977 people.

The anniversary will be commemorated on Friday with ceremonies featuring the reading of victims’ names, moments of silence, wreath-laying, flag displays and vigils at major memorial sites.

President Donald Trump is scheduled to attend the ceremony at the Pentagon, while Vice President JD Vance is expected to join the commemoration at the National September 11 Memorial in New York.

The 25th anniversary has renewed attention on the survivors, relatives and first responders who have continued to live with the effects of the attacks for a quarter of a century.