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Incident
Police Officer Siegfred Mortera suffered a fatal heart attack while participating in his department's SWAT training at Eagles Field.
He was leading a run of other SWAT team members when he suddenly collapsed at approximately 9:00 am. Another officer performed CPR until medics arrived at the location. He was transported to Naval Hospital Guam where he remained unresponsive before passing away three days later.
Officer Mortera had served with the Guam Police Department for 17 years.
Survivors
He is survived by his wife, four children, and three grandchildren.
In Our Keeping
- Permanent identifier
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- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- 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.
Police Officer III Mortera gave the Guam Police Department 17 years.
Thank you for your service to the Barrigada community. Gone but never to be forgotten.
Rest easy, Police Officer III Mortera.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
The Sacrifice · Cardiac
Guam Police Department has lost 10 officers; 1 of them lost to cardiac events.
Siegfred is one of 1 officer lost to cardiac events in BA, 9.1% of the 11 remembered there.
Siegfred is one of 1,307 officers lost to cardiac events in the United States, 4.7% of the 27,551 remembered there.
Siegfred is one of 1,309 officers lost to cardiac events worldwide, 3.9% of the 33,917 remembered here.
33,917 officers are remembered on this memorial. Each number below is one of them.
Time
In 2015, 21 officers in the United States were lost to cardiac events, the 7th heaviest of 139 years on record. The heaviest was 2014, with 24.
In 2015, 21 officers worldwide were lost to cardiac events, the 7th heaviest of 139 years on record. The heaviest was 2014, with 24.
Who
Siegfred was 49. 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. Siegfred had served 17 years; the middle length of service was 15 years.
Siegfred was 49. Of the 1,251 lost to cardiac events worldwide whose age is recorded, half were between 42.5 and 55; the middle age was 48. Siegfred had served 17 years; the middle length of service was 15 years.
When
February holds 8% of these deaths in the United States; January holds the most, 9.6%. Saturdays: 14.3%.
February holds 8% of these deaths worldwide; January holds the most, 9.5%. Saturdays: 14.4%.
How
Cardiac deaths account for 10% of all 10 deaths at Guam Police Department, the 3rd most common cause.
Cardiac deaths account for 9.1% of all 11 deaths in BA, the 3rd most common cause.
Cardiac deaths account for 4.7% of all 27,551 deaths in the United States, the 4th most common cause.
Cardiac deaths account for 3.9% of all 33,917 deaths worldwide, the 4th most common cause.
His people
Guam Police Department has 10 officers remembered here, Siegfred among them.
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Juan Mafnas Santos
Jul 22, 1966
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Francisco Aguon Reyes
Jun 9, 1977
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Tomas Mendiola Sablan
Dec 10, 1978
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Rudy Caingat Iglesias
Dec 26, 1979
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Helen Kuulei Lizama
Dec 26, 1979
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Raymond S. Sanchez
Sep 30, 1983
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Manuel Anderson Aquino
Dec 12, 1985
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Edward Aguon Santos
Sep 18, 1989
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Frank E. Smith
Dec 30, 2007
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Siegfred D. R. Mortera
Feb 14, 2015
Where
Where the Name Is Cut
National Law Enforcement Officers Memorial · Panel 36-W
What is kept
Photographs, film, sound and papers — what survived a life.
Others Who Wore This Badge
9 officers from Guam Police Department are honored on badge.nw.
