Resurfaced ground zero footage shows the moment an Americanj ournalist headed unknown toward the deadliest terror attack in US history.<br /><br />CBS News photojournalist Mark LaGanga drove down Manhattan’s West Side Highway on 11 September, 2001, unaware the south tower had already collapsed on itself.<br /><br />LaGanga can be seen walking up the highway towards the base of the north tower, interviewing passersby, and trying to find out what happened.<br /><br />A police officer thought the roof had caved in, while a firefighter thought part of the building collapsed.<br /><br />Even those who watched it happen up close could not process that the entire south tower had suddenly vanished.
