A custom protection officer is a highly trained security professional who is responsible for protecting property and citizens from crime-related incidents. As a custom protection officer, you typically work for G4S, a leading private security organization that offers services for both the government and private companies. Your job duties include patrolling residential, commercial, or government property, manning security stations, keeping incident reports, and screening visitors. The educational qualifications to have a career as a custom protection officer include a degree in criminal justice, police science, or security administration. Most employers require previous experience in the police force or military.