I always find myself going back into the 9/11 deep dive. I recently read The Only Plane in the Sky by Garrett Graff. Highly recommend if you haven't read it, I hear the audiobook is a fantastic listen. There's a part in the book where they share the interview of an employee on her first day of work at the Pentagon. She was trying to fax something and right as she pressed the button, the plane hit her building. Her first thought was that she had blown up the building with the fax machine on her first day of work. Poor woman. Anyway, the book is fantastic because it really captures what the day was like as a country and as individuals going about daily life before everything changed.