Here's one for the conspiracy "nutters" who claim the building was bombed and that there were never any planes. clue, bombs don't make "plane-shaped" holes. Unquestionably the most terrible day of our age.
These firefighters risked their lives as they were responders to the calls from the attack. They had jobs such as: going inside of the crumpling buildings & rescue the people trapped inside, fighting fires, & cleaning the mess up.