Threat of Another 9/11 Higher Now Than Ever Before, says former senior Trump official

It was 23 years ago Wednesday that terrorists hijacked four U.S. commercial airline flights, turned the planes into weapons, crashed them into the World Trade Center towers, the Pentagon, and a field in Pennsylvania, and in the process killed nearly 3,000 people. Today, America is at risk of another equally as deadly terrorist attack, a national security expert says.

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