Segval "Sig" Semingsen

Great Falls Police Department — Great Falls, MT

Cardiac

End of Watch November 28, 1935

Age 59

Tour of Duty 27 yrs

The Vigil Panel 70 ›

Gender Male

Incident Service The Sacrifice Department 5

Incident

Lieutenant Sig Semingsen suffered a fatal heart attack while responding to a disturbance call. He collapsed after running up two flights of stairs to the scene of the disturbance at or near 217 1st Ave South. Lieutenant Semingsen had served with the Great Falls Police Department for 27 years.

Survivors

He was a widower and was survived by his three children.

In Our Keeping

Permanent identifier: BO-US-MT-C8499205
Stewardship: Maintained by NeuraWeb Global Inc.
Added to badge.nw: August 2, 2026
Last updated: August 2, 2026

Honored here by 1 sentinel - 1 tribute.

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Tributes

27 years. You could have gone home.
Lieutenant Semingsen gave the Great Falls Police Department 27 years. Still answering calls at the end.
Thank you for your service to the Great Falls community. Gone but never to be forgotten.
Rest easy, Lieutenant Semingsen.

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

Agency

Department Great Falls Police Department

Type Police Department

Location Great Falls, Cascade County, MT

Platform Identity gfpd.cascade.mt.us.gov.nw

Service Record

End of Watch November 28, 1935

Tour of Duty 27 yrs

Age 59

Gender Male

Incident Details

Cause Cardiac

Lieutenant Segval "Sig" Semingsen is one of 1 officers lost to cardiac events in the line of duty across the full record of this memorial — 0% of all 97,756 officers honored here.

In MT, 10 of 142 officers were lost to cardiac events in the line of duty — 7% of this state's fallen. That is 7 percentage points above the national rate of 0%.

At Great Falls Police Department, 1 of 6 officers on record were lost to cardiac events in the line of duty — 16.7% of this agency's fallen.

Great Falls Police Department

of 6 officers

16.7% Cardiac

MT — Statewide

of 142 officers

7% Cardiac

Nationwide

of 97,756 officers

0% Cardiac