Deputy Sheriff Cooper Andrew Dyson

Deputy Sheriff Cooper Andrew Dyson

Pierce County Sheriff's Department, Washington

End of Watch Saturday, December 21, 2019

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Cooper Andrew Dyson

Deputy Sheriff Cooper Dyson was killed in a single-vehicle crash in the 1300 block of 112th Street E while responding to backup other deputies at a domestic violence incident in Parkland.

The deputies who responded to the initial incident at 3:00 am were immediately attacked by a male subject who engaged them in a violent struggle. The deputies believed that the man was attempting to access a shotgun that was inside of the home and called for backup during the struggle.

Deputy Dyson was responding to their call for assistance when his vehicle left the roadway and struck a commercial building. A passerby called to report the crash and Deputy Dyson was found deceased by responding deputies and rescue personnel.

Deputy Dyson was a military veteran and had served with the Pierce County Sheriff's Department for two years. He is survived by his expectant wife and 2-year-old child.


  • Age 25
  • Tour 2 years
  • Badge 579
  • Military Veteran

Incident Details

  • Cause Automobile crash

domestic, emergency response

Most Recent Reflection

View all 108 Reflections

I was at home sleeping safe and sound when Deputy Cooper Dyson was responding to an emergency call for assistance to aid his fellow officers dealing with a volatile subject. I am thankful to these brave officers who answer the call to serve so that I can sleep peacefully. This young man gave his all in serving both his country as well as the residents of Pierce County, WA for which I am eternally grateful. I will never forget #579! May he rest in peace!

Gone But Never Forgotten!
Elizabeth A. Rivera
ODMP Civilian Supporter

December 21, 2020

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