United States President Joe Biden and Vice President Kamala Harris laid a wreath at the Tomb of the Unknown Soldier in Arlington National Cemetery.
Barack Obama, Michelle Obama, George W Bush, Laura Bush, Bill Clinton and Hillary Clinton were also present for the wreath-laying.
Biden, who was sworn in as the 46th US president at the Capitol just hours earlier, was greeted by a 21-gun salute as he arrived at the cemetery on the outskirts of Washington.
US President Joe Biden and Vice President Kamala Harris attend a wreath-laying ceremony at Arlington National Cemetery's Tomb of the Unknown Soldier after the 59th Presidential Inauguration ceremony at the US Capitol. Photograph: Chip Somodevilla/Getty Images
US President Joe Biden and Vice President Kamala Harris attend the wreath-laying ceremony at Arlington National Cemetery's Tomb of the Unknown Soldier. The Tomb of the Unknown Soldier, where the wreath-laying will take place, is one of the most visited parts of the cemetery. Entombed there are the remains of soldiers from World War I, World War II, the Korean War and the Vietnam War. Photograph: Chip Somodevilla/Getty Images
The past and present US presidents took part in a moment of silence and a ceremonial laying of the wreath at the Tomb of the Unknown Soldier. Photograph: Tom Brenner/Reuters
US President Joe Biden and Vice President Kamala Harris arrive for a wreath laying ceremony at the Arlington National Cemetery, in Arlington. The cemetery -- just across the river from Washington DC - is home to the graves of dead US troops dating back to the Civil War. It is also the final resting place of two presidents - John F Kennedy and William H Taft. Photograph: Tom Brenner/Reuters
Former US President Bill Clinton with his wife, former Secretary of State, Hillary Clinton, former US President George W Bush with his wife Laura Bush, and former US president Barack Obama and his wife Michelle Obama wait for US President Joe Biden at the Arlington National Cemetery, in Arlington. Photograph: Tom Brenner/Reuters
A member of the military holds a flag for the United States Space Force which is a branch of the US Armed Forces during a wreath-laying ceremony at the Tomb of the Unknown Soldier after the 59th Presidential Inauguration at Arlington National Cemetery in Arlington, Virginia. Photograph: Chip Somodevilla/Getty Images