. >> lieutenant joseph brosi, engine 88, february 3rd, 2023. [ bell ] >> reporter: brosi's name, onewall last week, which commemorates firefighters, paramedics and civilian support staff who died from post 9/11 illnesses. it's the second largest group added to the memorial since it was created in 2011, when 55 names were added. the number of lives lost from post-9/11 illnesses on the wall now stands at 341, almost equally the 343 fdyn firefighters killed that day. >> that number has grown each year. and my fear is it will continue to grow. >> reporter: brosi says his father was at ground zero on 9/11 and remained working there day in and day out. so, too, was new york city firefighter daniel foley. foley pledged to stay at the site until his older brother thomas, also a city firefighter was found. foley ended up finding his brother's body, 11 days later. he continued to help with the recovery efforts for months. he died from pancreatic cancer in 2020. he was 46. >> he was diagnosed with 9/11 cancer. and we talk about the fact that 9/11 not only killed uncle tommy but 20 years later k