Emergency responders and military personnel paid tribute those killed in the 11 September 2001 attacks during the Republican Party's midterm convention in Dallas on Thursday.
The usually jovial crowd fell silent as an honour guard performed a solemn bell salute to remember the victims and mark the occasion, the eve of the 25th anniversary of the attacks.
The event saw thousands of people gather at the American Airlines Center to pledge their support for GOP candidates running in the crucial upcoming midterm elections, which will determine the makeup of Congress for the final two years of US President Donald Trump's term.
Trump and Vice President JD Vance are scheduled to visit the sites of the 2001 attacks on Friday, with Trump expected to deliver a speech at the Pentagon.
The National September 11 Memorial & Museum is also planning an event at the 9/11 Memorial plaza in Manhattan, where the families of victims will come together for a ceremony to read aloud the names of the 2,983 people killed in the September 11 attacks and the February 26, 1993, bombing of the World Trade Center.
