I was walking down Fifth Ave on my way to the office at 220 Fitfth Ave, around 23rd St., and I noticed a plane flying low over-head, and just above the building tops. I turned to a guy I did not know who was walking next to me and pointed that the plane seemed to be in trouble and too low. He had noticed as well and nodded in agreement. We both kept walking, watching the plane bank and turn as it seemed to try to stay on course for the Towers. At the very last seconds it became aware to both of us the plane was aiming at a Tower. When it hit I could not believe what I saw. Then I decided to go to the crash site to see what happened. Everything from that moment on, unfolded right in front of me. I did not miss a single thing. I am still haunted. I saw many people jump that day, about 12, some holding hands, and I watched them come all the way down. I was in a large group, with some late for work in the Towers, that had to run when the Towers came down as we had gotten so close. We had to run and stop to watch the horror and then keep running, it was like an avalanche of grey soot trying to engulf us all. I wish I never saw any of it, ever.