Authorities say a 23-year veteran of the Butler County sheriff's department has resigned after he was arrested for driving under the influence for the second time in two years. Captain Greg Blankenship was the supervisor of the department's drug and vice unit. Hamilton police say they charged him with operating a motor vehicle under the influence just before three a-m yesterday. Police reports say officers encountered Blankenship passed out in his vehicle in front of a drive-through window at a Steak N' Shake restaurant. Police say Blankenship had glassy eyes and slurred speech. He refused to take a Breathalyzer test but failed other field sobriety tests. Blankenship pleaded guilty in 2003 to driving under the influence of alcohol. Butler County Sheriff Richard K. Jones says he accepts Blankenship's resignation.