This is image that I most often think about when I think about September 11th.

Forty-one years ago this Friday, a 24-year-old Frenchman captivated the world when he walked across a high wire suspended between New York City's Twin Towers.

The terror assault of September 11, 2001, in which nearly 3,000 perished, was the most widely viewed breaking-news event in human history. And as the horrors unfolded, thousands of bystanders, professional photographers, and TV-news crews took tens of thousands of images and filled untold hours of videotape.

It has been 16 years since the devastating attacks of September 11. Coverage of the tragedy during which nearly 3,000 perished was the main priority that day for most Western news agencies (the scenes were witnessed by an estimated two billion people - a third of the human race). Together with amateur records, this has produced such an incredible amount of footage, some of it is rarely seen even today.

Performer Philippe Petit, who walked between the World Trade Center towers in 1974, says the difference between the average criminal and an artistic one is that the former takes and the latter gives.