Teresa Lynn Testerman

Harford County Sheriff's Office — Bel Air, MD

Cardiac

End of Watch November 29, 2010

Age 54

Tour of Duty 23 yrs

The Vigil Panel 159 ›

Gender Female

Incident Service The Sacrifice Department 5

Incident

Deputy First Class Teresa Testerman suffered a fatal heart attack following a response to unruly inmates in an overcrowded cell block in the Harford County Detention Center.

After quelling the disturbance she participated in a search of the cells for contraband weapons. After returning home following her shift she began to suffer chest pains. The following morning the symptoms intensified and she asked her son to call 911 and then collapsed. She was transported to a local hospital where she passed away a short time later.

Deputy Testerman had served with the Harford County Sheriff's Office for 23 years.

Survivors

She is survived by her son and daughter.

In Our Keeping

Permanent identifier: BO-US-MD-21A9E7D3
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

23 years. You could have gone home.
Deputy First Class Testerman gave the Harford County Sheriff's Office 23 years. Still answering calls at the end.
Thank you for your service to the Bel Air community. Gone but never to be forgotten.
Rest easy, Deputy First Class Testerman.

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

Agency

Department Harford County Sheriff's Office

Location Bel Air, MD

Platform Identity hcso.harford.md.us.gov.nw

Service Record

End of Watch November 29, 2010

Tour of Duty 23 yrs

Age 54

Gender Female

Incident Details

Cause Cardiac

Cause Detail Heart attack

Deputy First Class Teresa Lynn Testerman is one of 1,306 officers lost to cardiac events in the line of duty across the full record of this memorial — 4% of all 32,508 officers honored here.

In MD, 22 of 377 officers were lost to cardiac events in the line of duty — 5.8% of this state's fallen. That is 1.8 percentage points above the national rate of 4%.

At Harford County Sheriff's Office, 2 of 6 officers on record were lost to cardiac events in the line of duty — 33.3% of this agency's fallen.

Harford County Sheriff's Office

of 6 officers

33.3% Cardiac

MD — Statewide

of 377 officers

5.8% Cardiac

Nationwide

1,306

of 32,508 officers

4% Cardiac