Genelle Guzman-McMillan worked on the 64th floor of the World Trade Centre, and on September 11, 2001 was the last person pulled alive from the wreckage.
Broadcast date: Thursday 25 August 2011
More than an hour after the plane hit the North Tower where Genelle worked, she and her co-workers were still being given conflicting advice on whether to stay, or go.
When they eventually left and descended down the many flights of stairs, Genelle thought they would make it.
But as she removed her high heels to finish the walk down those last few flights, the skyscraper collapsed.
Genelle was pinned under the rubble, in the dark and in terrible pain, and rescued after 27 hours.
She has since received several awards, including a Medal of Honour from her employers, the Port Authority, and is now a volunteer with the Red Cross.
Angel in the Rubble published by Allen & Unwin.