A Russell County Man Will Spend More Than A Decade Behind Bars After Killing A Man In The Lebanon Walmart Parking Lot. Dennis Gilbert Was Convicted In October Of Second-Degree Murder And Other Charges After Killing Zachary Boyd Following An Argument. Gilbert Was Found Guilty Of Second-Degree Murder, Use Of A Firearm In Commission Of A Felony, And Shooting In A Public Location. On Wednesday, He Was Sentenced To 18 Years For The Felony Convictions And An Additional Year For The Misdemeanor.