From the New York Times, I'm Sabrina Tavernizi, and this is the Daily.

In the week since the assassination attempt on Donald Trump, the security mistakes that led to the shooting have come into sharp and shocking focus, and have now cost the head of the Secret Service her job.

Today, my colleague Glenn Thrush on the Secret Service's historic failure. It's Wednesday, July 24th.

So, Glenn, you've been reporting on the investigation into the security failures

around the assassination attempt of Donald Trump and they were pretty

catastrophic so much so that the head of the

Secret Service, Kimberly Cheetle, was hauled before Congress to explain herself.

And then on Tuesday morning she resigned, which puts the blame pretty directly on the secret

service.

It was a monumental failure.

The worst failure in the Secret Service for at least 40 years and maybe of all time.

There was just a tremendous lack of coordination between the group of Secret Service personnel who were tasked with protecting

Donald Trump and the local authorities that the Secret Service works in coordination with to control the site around the perimeter of the event.

Okay, so let's unpack that. What have we learned in the week since the shooting about the mistakes that led to this

failure. Quite a bit, Sabrina, and none of it was good for the Secret Service

and ultimately for Cheetal. Let's start first off with how the Secret Service divided the

responsibility on the ground. So the way that this was set up is that there was a

perimeter and inside that perimeter was essentially the province of the Secret Service.

So you can kind of think of that as the high security area.

It's the area in the direct proximity of where Trump was going to speak.

Now, outside the perimeter, it gets a little sketchy. This is the

province typically of local law enforcement. Now they're working under the Aegis of

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