The Sussex Fire Commission appointed David Johnsen to serve as the new Sussex fire chief on Tuesday, Jan. 24. Johnsen will join the Sussex Fire Department on Feb. 27; he is fulfilling his final work commitments with his current employer, the Lisle-Woodridge Fire District in Illinois. Johnsen started his 30-year career in fire service with the New Berlin Volunteer Fire Department. He began working for the Lisle-Woodridge Fire District in August 1991. Johnsen progressed through the ranks from firefighter to lieutenant to captain, then battalion chief, which was his most recent position prior to being hired by Sussex.