WASHINGTON (AP) — Former Defense Secretary Donald Rumsfeld says he kept the Pentagon open after a terrorist attack 10 years ago today to send a message.

Rumsfeld tells “Face the Nation” on CBS that he didn’t want the world to think that a group of terrorists could shut down the Defense Department.

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Rumsfeld says it was clear that terrorists had hit the seat of economic power in New York and the seat of military power in Washington. He says another plane was probably going to aim for the seat of political power — either the Capitol or the White House.

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He says that’s why the Pentagon had to stay open.

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