 If you're flying at 500 miles an hour, you have a difficulty finding it. Even if you have GPS, like an approach, there's only one way to approach it that you'd even stand a chance. And so I think they just said, well, we can't do this in real time. Let's go for the Pentagon. But they thought, and rightly so, that a plane was coming toward the White House. The Secret Service detail, Dick Cheney, tells the story.