Book excerpt: The first book to document the terrorist attack on the WTC - from the moment of impact and the collapse of the Twin Towers to the rescue efforts at Ground Zero of the police officers, firefighters, emergency service personnel and volunteers from all over the US, as well as the family members and friends searching for their lost loved ones. Also includes some of the most beloved photographs of the WTC buildings, and the human activity within, as photographed by the esteemed Magnum photographers over the past 25 years. With 100 full-colour & b/w photos.