From New York City to Shanksville, Pa., from the White House to baseball stadiums around the nation, America will pause once again Friday to mark the 13th anniversary of the Sept. 11, 2001 terror attacks that killed nearly 3,000 people.
The largest ceremony will take place at the National September 11 Memorial & Museum near the site of the World Trade Center's twin towers, which were brought down when two hijacked passenger jets slammed into them that day. Families of the victims will gather at the memorial's plaza for what has become a tradition of tolling bells, observing moments of silence, and reading the names of those who died.
The plaza is reserved for victims' relatives and invited guests for the morning ceremony, but will be open for the public to pay their respects in the afternoon. An estimated 20,000 people flocked to the site last year, the first year the public was able to visit on the anniversary.
"When we did open it up, it was just like life coming in," National Sept. 11 Memorial and Museum President Joe Daniels told the Associated Press this week, adding "the general public that wants to come and pay their respects on this most sacred ground should be let in as soon as possible."
The Flight 93 National Memorial near Shanksville in western Pennsylvania is marking the completion of its visitor center, which opened to the public Thursday. At the Pentagon, Secretary of Defense Ash Carter and other officials will join in remembrances for victims' relatives and Pentagon employees.
President Obama is scheduled to observe a moment of silence with the first lady and White House staff on the mansion's South Lawn before visiting Fort Meade in Maryland, in recognition of the military's work to protect the country.
Ohio's statehouse will display nearly 3,000 flags — representing the lives lost — in an arrangement designed to represent the World Trade Center towers, with a Pentagon-shaped space and an open strip representing the field near Shanksville. Sacramento, Calif., will commemorate 9/11 in conjunction with a parade honoring three Sacramento-area friends who tackled a heavily armed gunman on a Paris-bound high-speed train last month.
Major League Baseball will pay its own tribute to mark the anniversary of the attacks. At every stadium where a big league game is played Friday, there will be moments of silence, as well as other remembrances. Players, managers, coaches and umpires will wear caps with flag patches
In Washington, some members of Congress plan to spend part of the anniversary discussing federal funding for the ground zero memorial. The House Natural Resources Committee has scheduled a hearing Friday on a proposal to provide up to $25 million a year for the plaza.
The memorial and underground museum together cost $60 million a year to run. The federal government contributed heavily to building the institution; leaders have tried unsuccessfully for years to get Washington to chip in for annual costs, as well.
Under the current proposal, any federal money would go only toward the memorial plaza. An estimated 21 million people have visited it for free since its 2011 opening.
The museum charges up to $24 per ticket, a price that initially sparked some controversy. Still, almost 3.6 million visitors have come since the museum's May 2014 opening, topping projections by about 5 percent, Daniels said.
Any federal funding could lead to expanded discounts for school and other groups, but there are no plans to lower the regular ticket price, he said.
This year's anniversary also comes as advocates for 9/11 responders and survivors are pushing Congress to extend two federal programs that promised billions of dollars in compensation and medical care. Both programs are set to expire next year.
But some of those close to the events aim to keep policy and politics at arm's length on Sept. 11.
Organizers of the ground zero ceremony decided in 2012 to stop letting elected officials read names, though politicians still can attend. Over the years, some victims' relatives have invoked political matters while reading names — such as declaring that Sept. 11 should be a national holiday — but others have sought to keep the focus personal.
"This day should be a day for reflection and remembrance. Only," Faith Tieri, who lost her brother, Sal Tieri Jr., said during last year's commemoration.