What does any of that have to do with the worst terrorist attack in American history?

This was by far the worst attack we have had.

It was the worst attack against German soldiers in four years.

And nothing has led me to believe that it was anything but a very bad terrorist attack.

One Sunday morning he had a bad attack during the service.

The police say it was one of the worst attacks that they've seen on a horse.

It was considered as the worst terrorist attack in the Philippines.

Others have many bad attacks that send them to the doctor often.

Then came the worst terrorist attacks in the nation's history.

He had to deal with the worst attack in the history of this country.