Each year, I do my best to avoid writing anything new about September 11th.
Instead, I will just point you to my experiences that day (which I wrote up the evening of 9/11). I was the Market Strategist for a firm headquartered at 2 WTC, offices on the 29th floor. I was fortunate to be in the LI office as events unfolded, and I managed to get my head trader on the phone. Bill gave me a full running narration of what was occurring in real time, until the towers went down and broke our phone connection. (Everyone in our office survived). I put all of what he said down on paper, and published it the next day at the now defunct Geocities (I saved a copy before that site disappeared).
A Personal Recollection From a Day of Horror (September 12th, 2001).
I have nothing else to add . . .