Dave Hirst spent 25 years on the Dayton police force, building a reputation as a dedicated, quiet officer and prized colleague with a gift for ferreting out the truth.

What happened that led him to allegedly walk into a Cambridge bank a year after his retirement remains a puzzle to his friends, family, colleagues and even the cops investigating the November robbery.

What are community members' reactions to this retired officer now being in jail? What was Hirst described as by others?

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