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Incident
Lieutenant Knollman, who started having dizzy spells while on duty, went home where he had a heart attack and died.
Survivors
He was survived by his wife and son.
In Our Keeping
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- 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.
Lieutenant Knollman gave the Dunkirk Police Department 11 years.
Thank you for your service to the Dunkirk community. Gone but never to be forgotten.
Rest easy, Lieutenant Knollman.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
The Sacrifice · Cardiac
Dunkirk Police Department has lost 3 officers; 1 of them lost to cardiac events.
John is one of 102 officers lost to cardiac events in NY, 4.8% of the 2,132 remembered there.
John is one of 1,307 officers lost to cardiac events in the United States, 4.7% of the 27,551 remembered there.
John is one of 1,309 officers lost to cardiac events worldwide, 3.8% of the 34,117 remembered here.
34,117 officers are remembered on this memorial. Each number below is one of them.
Time
In 1932, 1 officer in NY was lost to cardiac events, the 32nd heaviest of 57 years on record. The heaviest was 1969, with 6.
In 1932, 5 officers in the United States were lost to cardiac events, the 89th heaviest of 139 years on record. The heaviest was 2014, with 24.
In 1932, 5 officers worldwide were lost to cardiac events, the 89th heaviest of 139 years on record. The heaviest was 2014, with 24.
Who
John was 43. Of the 92 lost to cardiac events in NY whose age is recorded, half were between 37.8 and 51.5; the middle age was 45. John had served 11 years; the middle length of service was 15 years.
John was 43. 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. John had served 11 years; the middle length of service was 15 years.
John was 43. 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. John had served 11 years; the middle length of service was 15 years.
When
February holds 9.8% of these deaths in NY; January holds the most, 13.7%. Saturdays: 13.7%.
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 33.3% of all 3 deaths at Dunkirk Police Department, the 2nd most common cause.
Cardiac deaths account for 4.8% of all 2,132 deaths in NY, the 4th 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 3.8% of all 34,117 deaths worldwide, the 4th most common cause.
His people
Dunkirk Police Department has 3 officers remembered here, John among them.
Where the Name Is Cut
National Law Enforcement Officers Memorial · Panel 36-E
Others Who Wore This Badge
2 officers from Dunkirk Police Department are honored on badge.nw.