He had set up his laptop and picked up his morning coffee.

So far, everything was as usual.

After a while, the colleagues stood and looked out.

Something terrible had happened.

- What I remember were the contrasts between the silence where I stood inside thick glasses when I then came out into the commotion.

It's like standing with the sound turned off and watching what's going on.

Unreal.

Chaos and confusion

He would now get out of the fifteenth floor.

- It was chaos and confusion.

I wanted to go home and was also scared.

Lump in the stomach

He got out of the building and headed west toward Battery Park and then north into Manhattan.

There in the distance he saw the buildings collapse.

- I saw when the first scraper fell and then I got a lump in my stomach because I knew how many people worked in the house and how many of the rescue personnel got there.