It's hard to believe that the worst terrorist attacks ever in U.S. history happened almost 10 years ago.  Watching all of the documentaries and specials on the 9/11 attacks stirs up so many memories, it almost seems like it was just yesterday.

Of all the 9/11 documentaries, the most chilling, in my opinion, is "102 Minutes That Changed America" airing on the History Channel.  Its assembled from firefighter and police radio communications, news footage, home video and much more.  What's interesting is that it is a minute by minute account of actual audio and video of the events as they played out in real time.

On the anniversary of 9/11, the History Channel will air this special starting at 8:46am.  This will line up, to the minute, with the events of that horrible day exactly ten years later.   I will say that it is quite graphic.  Check out a preview below, and check out "102 Minutes That Changed America" on the History Channel, Sunday 9/11/2011 at 8:46am.