Kenneth J. Doyle
Agency patch
Deputy U.S. Marshal

Kenneth J. Doyle

Illness Veteran →
End of Watch July 26, 2017
Age 65
Tour of Duty 20 yrs 5 mo
The Vigil Panel 167 ›
Gender Male

Incident

Location: New York Incident Date: Tuesday, September 11, 2001 Weapon: Aircraft; Passenger jet Offender: 19 suicide attackers

Deputy U.S. Marshal Kenneth Doyle died as the result of cancer that he developed following his assignment to assist with search and rescue efforts and to escort other government officials around the World Trade Center site immediately following the 9/11 Terrorist Attacks.

Deputy Marshal Doyle was a U.S. Navy veteran and had served with the United States Marshals Service for 20-1/2 years.

September 11, 2001 - The Years After

Deputy U.S. Marshal Kenneth J. Doyle was assigned to the search and recovery at the World Trade Center site after September 11, 2001. He was 50 years old that fall.

He died on July 26, 2017 - 15 years and 10 months later - of an illness contracted there. He was 65.

He is one of 599 officers honored here, and one of 3 at United States Department of Justice - United States Marshals Service.

The most recent of these deaths was October 24, 2025.

Officers who worked the search, rescue, and recovery at the World Trade Center site breathed contaminated air for weeks and months afterward. Many developed cancers and respiratory disease, and they have gone on dying of it ever since.

Seventy-two officers were killed on the morning itself. Hundreds more have died in the years that followed. They are honored here together, because the same attack killed them all. With some it simply took longer.

Survivors

He is survived by his wife and four children.

In Our Keeping

Permanent identifier
BO-US-FED-64AB6A2C
Stewardship
Maintained by NeuraWeb Global Inc.
Added to badge.nw
April 2, 2026
Last updated
July 23, 2026

Honored here by 1 sentinel - 1 tribute.

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Tributes

You walked into it and it took years to finish the job.
Deputy U.S. Marshal Doyle gave the United States Department of Justice 20 years.
Thank you for your service. Gone but never to be forgotten.
Rest easy, Deputy U.S. Marshal Doyle.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Location Washington, DC
Platform Identity usms.fed.us.gov.nw

Service Record

End of Watch July 26, 2017
Tour of Duty 20 yrs 5 mo
Age 65
Gender Male

Incident Details

Cause Illness
Weapon Aircraft; Passenger jet
Offender 19 suicide attackers

Military Service

Kenneth J. Doyle served in the Navy (1969–1973) before joining law enforcement.

View full service record on salute.nw →

Deputy U.S. Marshal Kenneth J. Doyle is one of 2,974 officers lost to illness connected to their service across the full record of this memorial — 9.1% of all 32,508 officers honored here.

In DC, 137 of 1,419 officers were lost to illness connected to their service — 9.7% of this state's fallen. That is 0.6 percentage points above the national rate of 9.1%.

At United States Department of Justice - United States Marshals Service, 14 of 313 officers on record were lost to illness connected to their service — 4.5% of this agency's fallen.

United States Department of Justice - United States Marshals Service
14
of 313 officers
4.5% Illness
DC — Statewide
137
of 1,419 officers
9.7% Illness
Nationwide
2,974
of 32,508 officers
9.1% Illness

National Cause Distribution

How Illness compares to all causes of officer death in the memorial record. Kenneth J. Doyle's cause is highlighted.

Felonious
17,623 (54.2%)
Accident
10,088 (31%)
Illness
2,974 (9.1%)
Cardiac
1,306 (4%)
Undetermined
260 (0.8%)
Suicide
256 (0.8%)
vehicular
1 (0%)

How Kenneth J. Doyle Compares

Age at End of Watch
65
This officer
Avg for Illness: 47.8 years
Years of Service
20.4
This officer
Avg for Illness: 18.9 years

Offender Outcome

19 suicide attackers

When Illness Deaths Occur

Monthly distribution of Illness deaths across the full memorial record. Kenneth J. Doyle is highlighted in Jul.

Jan
294
Feb
198
Mar
185
Apr
226
May
201
Jun
181
Jul
217
Aug
281
Sep
291
Oct
376
Nov
239
Dec
285

Incident Location