Lessons Learned from Ground Zero · The Facts

The Facts of Ground Zero

A sourced, factual record of September 11, 2001 — the recovery, the clinic that screened the rescue workers, and the health legacy that still unfolds a quarter-century later.

Our lessons and our songs carry the meaning of that day. This page carries the record — what happened, what was measured, and what the numbers say today — drawn from Dr. Robert Gillio's firsthand account and cross-checked against the public record. Every figure below is sourced.

01 September 11, 2001 — What Happened

A coordinated terrorist attack using four hijacked commercial aircraft.3
2,977
people killed on 9/11 (excluding the 19 hijackers)3
2,753
of those deaths at the World Trade Center3
4
hijacked aircraft, at three sites in one morning

02 The Aftermath — "The Pile"

The collapse pulverized the towers into a vast smoldering debris field that responders called "the pile." Recovery and clean-up operations continued for roughly nine months, with the effort officially concluding on May 30, 2002.3 The air over the site carried a caustic mixture of pulverized concrete and glass fibers, asbestos, heavy metals, and the products of long-burning fires — the exposure that would drive the health crisis to come.2

03 The Ground Zero Clinic

Source note: This section is Dr. Robert Gillio's firsthand account, drawn from his own written record for the 25th anniversary.1

In the fall of 2001, Dr. Robert Gillio, MD — a board-certified pulmonologist — helped set up and run a clinic for the New York Police Department at Ground Zero, in partnership with the Living Heart Foundation, serving without reimbursement.1

The field record they used had begun as a father-daughter STEM science kit — "Marstronauts in Training" — a laptop wired to a spirometer and pulse oximeter to teach his children how their own bodies work. When 9/11 struck, he jury-rigged it into an early telemedicine and field-record system he called the T.E.A.M. Machine (Telemedicine, Education, Administration, Medical), linking a spirometer, electrocardiograph, pulse oximeter, and radiation detector to specialists off-site.1

200+
volunteers from across the country1
~1,800
rescue workers screened at the clinic1
Tens of thousands
of confidential exposure records processed1

04 The Foresight That Mattered

At the clinic, the team built a questionnaire capturing each person's exposures — the dust, the smoke, the days on the pile — in Dr. Gillio's words, "because I knew we would someday need to understand what this place did to the people who saved it. You cannot measure harm you never recorded."1

That baseline data helped make the case for the World Trade Center Health Registry, which has since helped underwrite care for tens of thousands.1 Dr. Gillio went on to co-author New York City's official clinical guidelines for treating the exposed — Clinical Guidelines for Adults Exposed to the World Trade Center Disaster (NYC Dept. of Health & Mental Hygiene, City Health Information, August 2006).4

05 The Health Legacy Today

The federal World Trade Center Health Program now monitors and treats those exposed. Figures below are current as of December 31, 2025.5
141,515
total Program members5
70,273
responders enrolled5
54,048
survivors (residents, workers, students) enrolled5
66.6%
certified for at least one WTC-related condition5
52,927
cancer certifications (Program lifetime)5
17,709
PTSD certifications — the mental-health toll endures5

The most-certified conditions include cancer, chronic rhinosinusitis, GERD, asthma, and PTSD — the respiratory, digestive, and mental-health signature of the exposure Dr. Gillio's clinic began documenting in 2001.5

06 The Promise — and the Work That Remains

Federal care for those exposed was established by the James Zadroga 9/11 Health and Compensation Act of 2010, reauthorized in 2015, with funding later made effectively permanent.5 As Dr. Gillio notes, a budget is not the same as care: he reports the Program running roughly 25% short-staffed under a hiring freeze as the 25th anniversary arrives — "We funded the promise; we still have to keep it."1

This is why we go Ready & Resilient.

The people who could help at Ground Zero were the ones healthy, trained, and steady enough to do it. That is the heart of the September challenge — every community becoming its own first responder.

Enter the Course →

Prepared by The Force for Health® Network for the 25th anniversary of September 11. Dr. Gillio's firsthand account (Source 1) is presented as his own record; historical and program figures are cited to the public sources below.

Sources

  1. Robert Gillio, MD — 25th-Anniversary Backgrounder and Op-Ed, "The Victim Is the First Responder. Are You Ready?" The Force for Health® Network, 2026. Firsthand account of the Ground Zero clinic, the T.E.A.M. Machine, and the exposure questionnaire.
  2. U.S. Environmental Protection Agency & NIOSH — findings on World Trade Center dust composition (pulverized concrete, glass fibers, asbestos, heavy metals, combustion products).
  3. National September 11 Memorial & Museum / public historical record — timeline of the September 11, 2001 attacks and the 2,977 victims. 911memorial.org
  4. Clinical Guidelines for Adults Exposed to the World Trade Center Disaster — NYC Department of Health & Mental Hygiene, City Health Information, Aug. 2006; Vol. 25(7):47–58 (co-authored by Dr. Gillio).
  5. CDC — World Trade Center Health Program, External Quarterly Program Summary, December 31, 2025. cdc.gov/wtc · Covered conditions: cdc.gov/wtc/conditions.html