I was at work, with the towers in clear view. I remember my wife calling and telling me that a plane hit one of the towers, at that point we all thought it was a tragic accident. When she called to tell us that the second tower was hit we realized it was something else.
My wife was pregnant with our second daughter, and she was due any day, we were told that there may not be any hospital space to deliver her so her doctor was looking for other options.
I remember sending everyone else home and staying at work to help prepare and secure the site. We had armed guards patrolling the perimeter, worked with local law enforcement because we were a chemical site, which, at the time, was considered a potential target..
It was a surreal day, where it seemed like everything stopped. All we had was a radio tuned into 95.5.
We were able to see everything from the roof of one of our buildings, I remember one of our engineers took a thermographic scan of one of the towers before it fell and it was close to 2000 degrees.
A day I will never forget.