| Name | William Zink | 
| Agency | Chicago Fire Department | 
| Rank | Firefighter | 
| Type of Firefighter | Career | 
| Age Range | 61 to 70 | 
| Sex | Male | 
| Date of Birth | 0/0/0 | 
| Date of Death | 4/26/1971 | 
| Cause of Death | Stress/Overexertion | 
| Nature of Death | Heart attack | 
| Attribute of Death | [not applicable] | 
| Type of Duty | Post-incident | 
| Incident Name | N/A | 
| Incident City | Chicago | 
| Incident State | IL | 
| Incident Date | 4/25/1971 | 
| Incident Location | Firehouse | 
| Incident Attribute | [Not applicable] | 
On April 25, 1971, Lieutenant William J. Zink, a 33-year veteran of the Chicago Fire Department, suffered chest pains while on duty with the 17th Battalion. Several hours later he suffered a heart attack in his home and was taken to Roseland Community Hospital, where he died in the early hours of April 26.
Citations:
Obituary of William J. Zink, Chicago Tribune, April 27, 1971.