Mark Barnes-cover PRESQUE ISLE, Maine -- April 20, 2021 -- Retired Presque Isle Police sergeant Mark Barnes stands next to his patrol car after signing off from his final day on the job. (Courtesy of Paula Barnes) PRESQUE ISLE, Maine -- April 20, 2021 -- Retired Presque Isle Police sergeant Mark Barnes stands next to his patrol car after signing off from his final day on the job. (Courtesy of Paula Barnes) Retired PIPD sergeant reflects on years of service to community On April 20, Presque Isle Police Sergeant Mark Barnes left the station after his final day on the job. Police chief Laurie Kelley drove Barnes home in his patrol car, the blue lights flashing as they stopped in front of his home.