As the 13th anniversary of September 11th, 2001 approaches, remember the 2,753 people that were killed that day. The 343 Firefighters, 23 NYPD officers, the 37 PAPD officers, and the 30,000 responders that have been certified as having one or more 9/11-associated illness or injury; two-thirds of them have two or more illnesses, and about 2,800 have been diagnosed with cancer.