I had just gotten off work and had stopped at the local supermarket. They were playing a local radio station and announced that a plane at crashed into one of the towers. I, and others, thought it to be a small aircraft accident.
When I got home I flipped on the TV just in time to see the 2nd plane hit, then I heard the news about the Pentagon and the plane crashing in Penn. The plane had struck in the area where my wife had worked a few years before.
I did not know anyone at the trade center, but I did at the Pentagon. One of them was severely burned, but survived although he still very scarred.
The shock to the nation and world reminded me of the day JFK was murdered. I remember that too.