With the benefit of two decades of hindsight, Sarah and Allen re-examine the "iconic" photos from September 11 and talk about the need for photographers to re-share their images and experiences with others. 

In the episode, we look at photos from Steven Pyke, Aristede Economopoulos, Stan Honda, James Nachtwey, Suzanne Plunkett, Shannon Stapleton, Robert Clark, Alex Webb, Richard Drew, Robert Clark and more.