A 12-year federal prison sentence was handed down to a Carl Junction, Mo., man, formerly from Columbus.Chet Edwin Mercer, 35, was sentenced by U.S. District Judge M. Douglas Harpool Thursday, February 29, to 12 years in federal prison without parole for methamphetamine trafficking and illegally possessing a firearm.On October 12, 2023, Mercer pleaded guilty to one count of possess...