Aerial Shots of World Trade Center Demolition

“The only known aerial photographs of the World Trade Center as it collapsed on September 11, 2001, were released by ABC News on Wednesday.” Reuters

“The photos, taken from a helicopter by New York Police Det. Greg Semendinger, show the twin towers in flames, falling amid huge, billowing clouds of dust, debris and smoke that envelop downtown Manhattan.”

Pyroclastic flows (aka a pyroclastic density currents) are seen in much of lower Manhattan and the area surrounding the World Trade Center in New York, in nearly all of the photos taken on  September 11, 2001 handout file photo taken by the New York City Police Department and obtained by ABC News, which claims to have obtained it under the Freedom of Information Act.  Credit: REUTERS/NYPD via ABC News, Det. Greg Semendinger/Handout

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