US NAVY
John Michael Koen
November 9, 1942—March 30, 2014
Life Timeline
71 years1942
Born
November 9, 1942
US NAVY
Service Record
Vietnam War
Vietnam War
Conflict
2014
Passed Away
March 30, 2014
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more