Yes, there was a pall over everything. We'd think somehow we'd go back to normal someday, but we really never did.I still remember how I felt in the days during and after 9/11. Such a bleak and sorrowful time.
Oh yes, the train bombings,,, you were in Spain, omg.Remember the moments of silence and the candlelight vigils? We happened to be in Barcelona during the 2004 Madrid train bombings and were struck by the similarity in the response of the citizens. We were walking in one of the squares and promptly at Noon everyone stood in silence. There were also candles shining in the evening in La Rambla. We knew exactly what they were feeling.
https://www.britannica.com/event/Madrid-train-bombings-of-2004
There's video of firemen entering the south and north tower. You can hear the sound of bodies hitting the roof above. Burn slowly and die painfully, or jump and it's over quick. Yeah, I'll take the fast exit.
I lost a good friend who was flying that day. Jason Dahl taught me most of what I knew about the Boeing 757 and 767. Jason was not only a Senior Captain, but also a training pilot. His lovely wife died like 10 years later. I was told she took to the bottle and pills to kill her pain.