9/11 Like You’ve Never Seen It Before

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Photo: Det. Greg Semendinger/NYC Police Aviation Unit via ABC News

ABC News has obtained, through a Freedom of Information Act request, thousands of photos of the collapse of World Trade Center towers on 9/11. Some of the photos, which were taken by NYPD Detective Greg Semendinger from a police helicopter, have never been released before. [ABC News, CBS 2]