A look at events marking the 12th anniversary of the Sept. 11 attacks:
New York City
In a sadly familiar ceremony, friends and relatives of World Trade Center attack victims gathered at the National Sept. 11 Memorial plaza to call out the names of the dead and read messages to lost loved ones.
A bell chimed to mark the moments when four hijacked jets crashed into the twin towers, the Pentagon and a field in Pennsylvania, and again to mark the moments when the two skyscrapers collapsed.
Several politicians attended, including New Jersey Gov. Chris Christie and former New York Gov. George Pataki, but none gave an address.
The ceremony also recognized victims of the 1993 World Trade Center bombing.
President Barack Obama held a moment of silence at 8:46 a.m. on the White House’s South Lawn to mark the first attack in New York. He was joined by wife Michelle Obama, Vice President Joe Biden and his wife, Jill Biden. A bugler played taps.
Then, the president traveled to the Pentagon Sept. 11 memorial in Arlington, Va., where victims’ families, attack survivors and military officials laid a wreath and held a moment of silence at 9:37 a.m. to mark the moment that Flight 77 hit the building. Obama said, “Our hearts still ache for the futures snatched away, the lives that might have been.”
More than 200 people gathered at the Flight 93 National Memorial to read the names of 40 passengers and crew killed when the airliner crashed into a field near the small town of Shanksville.
Recalling the passengers and crew who had fought the hijackers, U.S. Interior Secretary Sally Jewell told the assembled families and spectators, “We never know when we’ll be called to lay down our lives for others.”
A wreath-laying ceremony in the city’s Public Garden was followed by a commemoration at the Statehouse, during which participants read the names of more than 200 attack victims with ties to Massachusetts.
About 200 military veterans observed the anniversary by fixing up the grounds of Texas Fire Museum, in one of many volunteer events around the nation recognizing Sept. 11 as a national day of public service.
The group MyGoodDeed, which organizes many of the service events, said it now gets about 50,000 pledges a year from people who plan to volunteer for a charitable activity on 9/11.
About 300 U.S. and other coalition troops in Afghanistan gathered at noon for a memorial ceremony at Bagram Airfield to remember those lost on Sept. 11. The service was held near a nine-foot beam that is from the World Trade Center site and which many of the troops here pass on their way to their duties.
At a Navy graduation ceremony in northern Israel, President Shimon Peres paid tribute to 9/11 victims, saying the attack was among the worst terrorist crimes in history. “The mourning of the United States of America is also the mourning of Israel,” he said.
Albania’s prime minister-elect, Edi Rama, began an important policy address by remembering the 9/11 attacks. “Sept. 11 dead are our dead too,” he said, adding, “Even the Aug. 21 dead from the chemical weapons in Syria are our dead.”