The United States marks the 14th anniversary of the September 11 terrorist attacks on Friday.
Observances are planned across the country in remembrance of the day when four airplanes carried out suicide attacks on the U.S. Two of the planes were flown into the World Trade Center in New York, another hit the Pentagon and a fourth crashed in a field in Shanksville, Pennsylvania, before reaching its likely target of Washington. Nearly 3,000 people were killed, including 19 of the perpetrators.
Families of victims in New York will gather Friday for a ceremony with tollilng bells and a reading of names of those killed in the terrorist attack.
President Barack Obama, with his wife and White House staff, will observe a public moment of silence Friday morning on the White House lawn. In the afternoon, the president will hold a town hall meeting with service members at Fort Meade just outside Washington to talk with those Americans helping to keep the country safe.
The Pentagon will host a private remembrance ceremony in the morning for family members of those lost in the attack on the Department of Defense building. Defense Secretary Ash Carter will lead a public ceremony there in the afternoon.
Near Shanksville in western Pennsylvania, the Flight 93 National Memorial is marking the completion of its visitor center in memory of the 40 passengers and crewmembers who carried out a sustained assault against the hijackers for control of the plane.
Memorials have been erected elsewhere, too.
In New York, the National September 11 Memorial & Museum operates where the World Trade Center's twin towers once stood. The museum houses artifacts and photographs connected to the attack.
At the Pentagon, the 184 people who died there are honored with 184 benches over pools of water.