71,000 people are listed on the 9-11 Emergency Worker Health Registry - EMS Professionals, firefighters, police officers, construction workers, volunteers and even clergy who worked at Ground Zero on 9/11 and the days following the attack. Of those, approximately 12% of Fire/EMS workers still are affected by Post Traumatic Stress Disorder (PTSD).
NEMSA Honors The Sacrifice And Efforts Of EVERYONE Who Responded and Remembers Everyone Who Died During The Tragic Events of September 11, 2001
Here is an image of part of the Memorial Plaque At The Pentagon: