We’re clearly all working with different definitions of ‘trauma’ here.
I think the thing I notice that sets me apart in experience from some Americans I talk to sometimes about 9/11 is that I fully expected that there would be such an attack during my lifetime, and I had years of watching Israelis model how one acts when one’s nation is going through such.
Granted, it was about ten times bigger than I had imagined, but my first reaction was “So, it’s here, and this is how it’s going to happen.”
This does not seem to have been everyone’s experience.