File:John E. Ptacek (Chicago police captain) (1).jpg
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![File:John E. Ptacek (Chicago police captain) (1).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/John_E._Ptacek_%28Chicago_police_captain%29_%281%29.jpg/449px-John_E._Ptacek_%28Chicago_police_captain%29_%281%29.jpg?20230423014841)
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