Adam Dean Liddle

Waterloo Police Department — Waterloo, IA

Cardiac

End of Watch October 29, 2015

Age 35

Tour of Duty 5 yrs

The Vigil Panel 165 ›

Gender Male

Incident Service The Sacrifice Department 7

Incident

Police Officer Adam Liddle suffered a fatal heart attack following a shift in which he responded to a burglary in progress and a shots fired call.

Officer Liddle had served with the Waterloo Police Department for three years and had previously served with the Black Hawk County Sheriff's Office for two years.

Survivors

He is survived by his wife and son.

In Our Keeping

Permanent identifier: BO-US-IA-059B0529
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

I never knew you. I am standing here anyway.
Police Officer Liddle gave the Waterloo Police Department 5 years.
Thank you for your service to the Waterloo community. Gone but never to be forgotten.
Rest easy, Police Officer Liddle.

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

Agency

Department Waterloo Police Department

Location Waterloo, IA

Platform Identity wpd.blackhawk.ia.us.gov.nw

Service Record

End of Watch October 29, 2015

Tour of Duty 5 yrs

Age 35

Gender Male

Incident Details

Cause Cardiac

Cause Detail Heart attack

Police Officer Adam Dean Liddle 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 IA, 11 of 226 officers were lost to cardiac events in the line of duty — 4.9% of this state's fallen. That is 0.9 percentage points above the national rate of 4%.

At Waterloo Police Department, 1 of 8 officers on record were lost to cardiac events in the line of duty — 12.5% of this agency's fallen.

Waterloo Police Department

of 8 officers

12.5% Cardiac

IA — Statewide

of 226 officers

4.9% Cardiac

Nationwide

1,306

of 32,508 officers

4% Cardiac