Flipping through channels on Sept. 11 was like rummaging through a box of old photographs. You see things you hadn't noticed before and ordinary images seem suddenly extraordinary. Of all the recaps, memorials and tributes, the one I found most riveting was the real-time replay of NBC's ``Today'' show from five years ago. We often wish we could return to the past with the knowledge and wisdom we've gained in the interim. Monday we got that chance. Minute-by-minute, we were able to re-experience 9/11, this time knowing what we know. It was chilling not only because of the obvious horror,...