Robert Bates

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FILE - In this Tuesday, May 31, 2016 file photo, Robert Bates, a former Oklahoma volunteer sheriff's deputy who said he mistook his handgun for his stun gun when he fatally shot Eric Harris, an unarmed suspect in 2015, is escorted from the courtroom following his sentencing at the courthouse in Tulsa, Okla. That shooting led to the temporary suspension of the reserve deputy program after a report found poor training of the volunteer officers, a lack of oversight, and cronyism. Bates is appealing his conviction. (AP Photo/Sue Ogrocki, File)