One of the Most Powerful Photos in 9:11

1. 

   A photo taken on September 11, 2001 by the New York City Police Department as the North Tower collapses, engulfing lower Manhattan in smoke and ash. 
   
   (Photo: AP Photo/NYPD, Det. Greg Semendinger)
   
   For the full photo collection, go to LIFE.com

   reviousnext

1. 
   
   

A photo taken on September 11, 2001 by the New York City Police Department as the North Tower collapses, engulfing lower Manhattan in smoke and ash. 

(Photo: AP Photo/NYPD, Det. Greg Semendinger)

For the full photo collection, go to LIFE.com