It’s been 25 years since al-Qaida attacked the United States by hijacking airplanes and crashing them into the World Trade Center and the Pentagon, with a fourth plane crashing into a field in Pennsylvania.
Sept. 11 represented a new kind of national security threat, and a new national security architecture was created to confront it.
Before a live audience at NPR, host Mary Louise Kelly discusses how that day changed the country and its spy agencies, with people who worked on the frontlines of government and intelligence.
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