MIDDLEBURY — Middlebury Police Department Sgt. Mike Christopher has had varied assignments during his lengthy career, ranging from minor traffic stops to facing down armed suspects.But one of his biggest challenges was making a final exit from the Middlebury police headquarters on May 28, after a 35-year career that made him the longest serving officer in the department’s history.“It was kind of tough walking out the door for the last time,” Christopher, 64, said during an interview on Monday.His introducti … (read more)