Hi, everyone. It's 4 o'clock in New York and a day that is one of somber reflection in

our country as it has been for the last 22 years. Memorials today in New York, Pennsylvania

and Washington, D.C. and all across the country. And later in the hour in Alaska, our President

Joe Biden just touched down. He'll be making remarks at a September 11th remembrance at

a military base in Anchorage. We'll bring those remarks to you as soon as they get underway.

The memorials today are also a reminder of the moment of national unity that took place

in the aftermath of the brutal September 11th attacks. And if the attacks revealed humanity's

capacity for pure evil, people's ability to inflict almost unspeakable horrors on other

humans, what happens after 9-11 revealed the best of humanity. We will ever forget the

harrowing images of the all hands on deck rescue effort at the side of the attacks and

the national effort to support first responders and victims and all their families and the

pledge to never forget. The attacks also fundamentally changed Washington, D.C. for a moment.

Officials of both parties, along with former officials of both parties who were in public

office at the time of the attacks, attended the events today to mark that. It is an echo

of how Americans were, for a while, able to set aside all differences, political and

otherwise. And that's the question we asked today. 22 years later, are we still back

country? Can we still do that? Are we capable of that kind of national unity? 22 years

later, our republic faces something it didn't have to deal with back then, a grave threat

that comes from right here, from within. According to government officials of both political

parties, the gravest threat to our homeland right now today, does not come from abroad

anymore. It is instead domestic violent extremism, and these officials tell us it is on the

rise. FBI Director Christopher Rae appointed by Donald Trump last year called political

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