I was in my 30's, had 2 small children and my Mum had come to babysit them as I had a job interview in London.
At first, we believed a small training plane had hit the building, then it became obvious it was a large plane
One of my children had a little blue/white/pink plastic toy house and held up the tv from it, which oddly had the twin towers on it's screen, we still have that little tv, even though the toy house is long gone. You realise watching old tv shows and films, the towers were a huge thing, like Big Ben or the Eiffel Tower, a very well know face of a country.
Seeing the first tower in flames was horrific, I've worked in tall buildings and I felt for the people there.
I got on the train and it had many shocked, saddened, worried people. My interview was rubbish, I didn't want to be there and wished I'd just stayed home. It was eerie (no planes were flying) and everyone had begun to leave and go home, I passed several people crying and in shock.
The train home had some people who knew workers in those two buildings, so very sad. To see both the buildings gone and the photo of a window (like a kind of jagged edge and small shapes that you realise are windows) really brought it home the following day.
I've watched many documentaries over the years, I guess because you just want to know why?
Thinking of all those affected.