The following photographs were all made on 9/11 and are described here in Nachtwey’s own words: In my mind it all went into slow motion. Everything was floating. I thought I had all the time in the world to make the picture, and only at the last moment realized I was about to be taken out.
The Story Behind the Haunting 9/11 Photo of a Man Falling From the Twin Towers
At the link above is a series of unpublished photos by James Nachtwey.