Protective Service Occupations First-Line Supervisors of Correctional Officers First-Line Supervisors of Police and Detectives First-Line Supervisors of Firefighting and Prevention Workers Miscellaneous First-Line Supervisors, Protective Service Workers Firefighters Fire Inspectors and Investigators Forest Fire Inspectors and Prevention Specialists Bailiffs Correctional Officers and Jailers Detectives and Criminal Investigators Fish and Game Wardens Parking Enforcement Workers Police and Sheriff's Patrol Officers Transit and Railroad Police Animal Control Workers Private Detectives and Investigators Gambling Surveillance Officers and Gambling Investigators Security Guards Crossing Guards and Flaggers Lifeguards, Ski Patrol, and Other Recreational Protective Service Workers Transportation Security Screeners School Bus Monitors and Protective Service Workers, All Other