Why I serve: The Kalkbrenner family
Marco Kalkbrenner, a policeman with the Goldsboro Police department, prepares to take off for an evening patrol in Goldsboro, N.C., April 25, 2018 Kalkbrenner retired in 2017 as a master sergeant in the Air Force following 20 years of service as a security forces member. (DoD photo by Marine Corps Sgt. David Staten)