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Associated Press
This undated photo provided by Kathleen Smith shows her grandfather Sgt. Caleb Embree Smith of the Flint, Mich., Police Department, who died by poisoning in 1921. Smith is one of 321 officers whose name will be added to the National Law Enforcement Officers Memorial in Washington, on Monday, May 13, 2013. (AP Photo/Courtesy of Kathleen Smith)

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