Mason County Prosecutor Paul Spaniola displays the gun that was used in the September 2013 killing of Michigan State Police Trooper Paul Butterfield II, to the jury during closing remarks of Eric Knysz's murder trial, Tuesday, Feb. 25, 2014, in Ludington, Mich. Knysz is charged in the shooting death of the state trooper during a routine traffic stop in rural Mason County. (AP Photo/The Muskegon Chronicle, Ken Stevens) ALL LOCAL TV OUT; LOCAL TV INTERNET OUT.
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