NEW YORK CITY -- Harrowing moments captured on camera Thursday as a backdraft caused a 5-alarm New York City fire to unexpectedly explode.
Firefighters were knocked off their feet when flames and smoke burst out the front of the building and swept through the entire city block.
Seven firefighters and five civilians were hurt but all of them are expected to survive.
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Camera captures backdraft of New York City building fire
U.S. & WORLD
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