Rob Serra was just 21 and had not even started in his new job as a New York City firefighter when terrorists brought down the World Trade Center’s twin towers on Sept. 11, 2001.
https://www.nbcnews.com/storyline/9-11-anniversary/9-11-first-responders-begin-feel-attack-s-long-term-n908306
9/11 first responders begin to feel attack's long-term health effects