Armored military vehicles, concertina wire atop non-scalable fencing and the massive show of force that fortified Capitol Hill in the aftermath of the violent attack on democracy last Jan. 6 are not defining Thursday's anniversary.

The security posture in Washington, by comparison, appears fairly ordinary. The temporary fencing that ringed the Capitol for more than six months, and again briefly for a September demonstration has not returned, though that could change quickly if conditions warrant, Capitol Police Chief Tom Manger told ABC News Chief Justice Correspondent Pierre Thomas in a recent interview. 

In a briefing Tuesday, Manger said his office was aware of several events planned for the day but that “most of them aren't of much concern to us.”

“There's no intelligence that indicates that there would be any problems,” he said.

At least 704 accused rioters have been charged by the Department of Justice, according to an ABC News count. At least 172 have pleaded guilty to their changes.

The FBI is still seeking 350 individuals believed to have committed violent acts on the Capitol grounds, according to the DOJ, including over 250 who assaulted police officers.

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-ABC News' Olivia Rubin, Alexander Mallin and Will Steakin

The union representing United States Capitol Police officers praised the "dedication and commitment" of those who protected the Capitol building one year ago.

"Today, we recognize the dedication and commitment to mission of the men and women who put their own lives and safety on the line to defend the U.S. Capitol," Gus Papathanasiou, chair of the union, said in a statement Thursday. "We especially pay tribute to Officer Sicknick who died after being injured during the rioting, and to Officer Liebengood who tragically took his own life after the attack."

According to Papathanasiou, 80 Capitol Police officers sustained injuries that day, with some so serious they are still not back at work. He said members of the force remain "committed to our mission," but that comes with an increase in officers as well as improved intelligence and communications between officers and leadership.

Papathanasiou noted that the legacy of Jan. 6 -- from a policing perspective -- should be a police force that is better prepared, with an eye toward readiness if an attack of such scale ever occurred again.

"Going forward, this Union will work with the Department to ensure those sacrifices will not be in vain," he added. "We must ensure that the events of January 6th are never repeated."

-ABC News' Luke Barr

On the evening of Jan. 5, 2021, on a sleepy street a short distance from the U.S. Capitol, a mysterious figure loomed. Wearing a sweatshirt with the hood pulled up, a pair of Air Max Speed Turf shoes with a yellow Nike logo, a backpack and gloves, the suspect walked through alleyways and was equipped with what investigators say were two pipe bombs.

A full year later, the agency still has not caught the person who placed the bombs nor has it released information about a "person of interest."

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-ABC News' Luke Barr

In a panel discussion moderated by Librarian of Congress Dr. Carla Hayden, historians John Meacham and Doris Kearns Goodwin addressed the significance of the anniversary of the attack and the importance of sharing a common truth about the events of the day instead of whitewashing what happened.

"This is about our future and all of us have a responsibility to remember that a more perfect union is about we the people, not a singular person," Meacham said.

He echoed Biden in calling the moment Americans face now "an inflection point" and said the founders would “want us to defend their experiment."

"In my lifetime this is the hardest moment for democracy," Goodwin added. "We have to recognize how deep that challenge is and not to sugar coat it, as Lincoln would say... but I think it can come back again."

The panel got some help at the top from the cast of the Broadway hit "Hamilton" -- which explores the foundations of American democracy and George Washington's choice to surrender power after two terms.

"You're all stewards of the American experiment," creator Lin-Manuel Miranda said in a pre-recorded video, before the cast sang, via Zoom, the song "Dear Theodosia" from the musical.

-ABC News Benjamin Siegel