CHICAGO (CBS) — Tuesday morning the Chicago Police Department will retire the badges of three officers killed in the line of duty last year.

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The stars of officers Samuel Jimenez, Conrad Gary and Eduardo Marmolejo will be enshrined in the superintendent’s honored star case at police headquarters.

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Jimenez died confronting a gunman at Mercy Hospital.

Gary and Mamolejo were hit and killed by a speeding train while chasing an armed suspect.

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More than 500 stars remembering fallen officers are in the display case.