Searching for Frank Arisman

I was watching the famous "Reflections Of Ground Zero", a news tv profile about the photographer Joel Meyerowitz, and eventually they've shown this guy named Frank Arisman, who worked as a banker wilst the 9/11 and saw the towers collapsing from the windows at his work. Arisman took some very interesting photographs that appear in the video and I was wondering if anyone knows something about him, knows him or where are these photos.

Here's the video https://www.youtube.com/watch?v=0eKyhfG6MF0