It's worth remembering, too, that not every victim died on that day. //

That last tweet points to another fact about the 9/11 attacks that’s worth remembering: not every victim died on that day. Up to September 2019, 441 first responders have died due to illnesses likely related to the rescue and clean-up efforts — 241 NYPD police officers and 200 FDNY firefighters have been lost since. Compare those numbers to the fallen on that day: 23 officers and 343 firefighters.