The Justice Department released high-resolution video showing the moment an armed man stormed past security at the White House Correspondence Dinner.

The incident is raising serious questions about the security posture surrounding the president at high-profile public events.

We're joined now by Juliet Kayam of the Homeland Security Project at Harvard's Kennedy School.

She previously served as

assistant DHS secretary in the Obama administration. Juliet, it's great to see you. So look,

there are lots of questions, as you know, about this shot that struck the U.S. Secret Service

agent. The U.S. attorney for the District of Columbia, Janine Piro, says there's no evidence

of friendly fire.

But the video, this single video, is not definitive.

What does this footage show us and what does it not show us?

So it shows us.

It shows the suspect going through, you know, a security metal detector, essentially. It also shows him speeding up. It shows

him trying to reach a gun. And then the frame by frame shows some dust, sort of a dust up, literally

up above, which would suggest that there had been a gun fired, because afterwards you then see

the Secret Service pick up their

guns. So the prosecutors will say that shows that he had deadly intent and that the Secret

Service were responding. But I will be honest with you, the frame by frame is not dispositive

in any way. What the government released was, you know, it was on different

speeds. It sort of slowed down and sped up. So a good defense attorney is going to, you know,

wonder why that is happening. What you also don't see is you don't see any movement, like a sort

of a muzzle from from his gun, go off. So it's a long way of saying lawyers

are going to debate this in court. It's certainly not definitive. The more important thing is

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