As the day closes, I find myself thinking about that time 16 years ago and how much the world has changed since then.
I think of the bravery that was shown by the emergency services and the general public.
Do I think the world has changed? Not really, we still have hate, fear and ignorance. We still have extremist groups from all sides, we still have war and poverty.
What I do think has changed is the fact we have the internet. 9/11 was the first terror attack to be properly reported by the internet, the rest of the world watched as the horror happened, and we got it in real time from people who were living it, not just reporters doing their job.
My thoughts go out to all the people affected that day