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Thomas Flores Douglas
Agency patch
Jailer

Thomas Flores Douglas

Harris County Sheriff's Office — Houston, TX
Cardiac
United States flag Texas flag
End of Watch March 10, 2004
Age 42
Tour of Duty 5 yrs
The Vigil Panel 338 · Column 2 · Line 7 ›
Gender Male
Incident Media Service The Sacrifice Memorials 1 Department 55

Incident

Jailer Thomas Douglas suffered a fatal heart attack while participating in a required training run.

He was participating in required physical training exercises at the Harris County Sheriff’s Office Training Academy in Humble, Texas. During the training exercises, he suddenly collapsed to the ground. Academy instructors immediately summoned medical assistance and performed life-saving CPR measures. He was transported to Houston Northeast Medical Center where emergency room medical staff continued to provide him with urgent medical care for as long as they could. At approximately 8:00 pm he failed to respond to medical assistance and was pronounced dead.

Jailer Douglas began his service to the Harris County Sheriff’s Office on January 26th, 2004, as a Harris County Sheriff’s Office Reserve Deputy Sheriff. He received his temporary Texas State Jailers License and was assigned to work in the Harris County Jail. On March 2, 2004, he was selected to receive his certification training as a Cadet in the Harris County Sheriff’s Office Reserve Academy

Jailer Douglas had served with the Harris County Sheriff's Office for five years.

Survivors

He is survived by his wife and two children.

In Our Keeping

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August 2, 2026
Last updated
August 2, 2026

Honored here by 1 tribute.

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Tributes

I never knew you. I am standing here anyway.
Jailer Douglas gave the Harris County Sheriff's Office 5 years.
Thank you for your service to the Houston community. Gone but never to be forgotten.
Rest easy, Jailer Douglas.

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

Agency

Department Harris County Sheriff's Office
Type Sheriff's Office
Location Houston, Harris County, TX
Platform Identity hcso.harris.tx.us.gov.nw

Service Record

End of Watch March 10, 2004
Tour of Duty 5 yrs
Age 42
Gender Male

Incident Details

Cause Cardiac

The Sacrifice · Cardiac

Thomas is one of 1,307 officers lost to cardiac events in the United States, 4.7% of the 27,551 remembered there.

34,117 officers are remembered on this memorial. Each number below is one of them.

  3. See the roll
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Compare against
I

Time

In 2004, 16 officers in the United States were lost to cardiac events, the 24th heaviest of 139 years on record. The heaviest was 2014, with 24.

Every year on record · United States
II

Who

Thomas was 42. Of the 1,249 lost to cardiac events in the United States whose age is recorded, half were between 43 and 55; the middle age was 48. Thomas had served 5 years; the middle length of service was 15 years.

Age at death
Where he stood among them
Age by years of service
III

When

March holds 7.6% of these deaths in the United States; January holds the most, 9.6%. Wednesdays: 14.5%.

By month
By day of the week
IV

How

Cardiac deaths account for 4.7% of all 27,551 deaths in the United States, the 4th most common cause.

Every cause
Weapons recorded
V

His people

Harris County Sheriff's Office has 56 officers remembered here, Thomas among them.

Across the years
VI

Where

Jailer Thomas Flores Douglas

Harris County Sheriff's Office · End of Watch March 10, 2004

Where the Name Is Cut

National Law Enforcement Officers Memorial · Panel 52-E

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