Heating, Ventilation, AC, and Refrigeration 3E2X1 – Pavements and Construction Equipment 3E3X1 – Structural 3E4X1 – Water and Fuel Systems Maintenance 3E4X3 – Pest Management 3E5X1 – Engineering 3E6X1 – Operations Management 3E7X1 – Fire Protection 3E8X1 – Explosive Ordnance Disposal 3E9X1 – Emergency Management 3F – Force Support 3F0X1 – Personnel 3F1X1 – Services 3F2X1 – Education and Training 3F3X1 – Manpower 3F4X1 – Equal Opportunity 3F5X1 – Administration 3G0X1 – Talent Acquisition 3H – Historian 3H0X1 – Historian 3N – Public Affairs 3N0X6 – Public Affairs 3N1X1 – Regional Band 3N2X1 – Premier Band – The United States Air Force Band 3N3X1 – Premier Band – The United States Air Force Academy Band 3P – Security Forces 3P0X1 – Security Forces 3P0X1A – Military Working Dog Handler 3P0X1B – Combat Arms Training and Maintenance Medical Medical 4A0X1 – Health Services Management 4A1X1 – Medical Material 4A2X1 – Biomedical Equipment 4B0X1 – Bioenvironmental Engineering 4C0X1 – Mental Health Service 4D0X1 – Diet Therapy 4E0X1 – Public health 4H0X1 – Respiratory Care Practitioner 4J0X2 – Physical Medicine 4J0X2A – Orthotics 4N0X1 – Aerospace Medical Service 4N0X1B – Neurodiagnostic Medical Technician 4N0X1C – Independent Duty Medical Technician 4N0X1D – Allergy/Immunization Medical Technician 4N0X1F – Flight and Operational Medical Technician 4N1X1 – Surgical Service 4P0X1 – Pharmacy 4R0X1 – Diagnostic Imaging 4T0X1 – Medical Laboratory 4T0X2 – Histopathology 4V0X1 – Ophthalmic Dental 4Y0X1 – Dental assistant 4Y0X1H – Dental hygienist 4Y0X2 – Dental laboratory Professional 5J – Paralegal 5J0X1 – Paralegal 5R – Religious Affairs 5R0X1 – Religious Affairs Acquisition 6C – Contracting 6C0X1 – Contracting 6F – Financial 6F0X1 – Financial Management and Comptroller Special Investigations 7S – Special Investigations (OSI) 7S0X1 – Special Investigations Special Duty Identifiers 8A100 – Career Assistance Advisor 8A200 – Enlisted Aide 8A300 – Protocol (Established 31 Oct 15) 8B000 – Military Training Instructor 8B100 – Military Training Leader 8B200 – Academy Military Training NCO 8B300 – AFROTC Training Instructor 8C000 – Airman & Family Readiness Center RNCO 8D100 – Language & Culture Advisor 8F000 – First Sergeant 8G000 – United States Air Force Honor Guard 8G100 – Base Honor Guard Program Manager 8H000 – Airmen Dorm Leader 8I000 – Superintendent, Inspector General 8I100 – Inspections Coordinator 8I200 – Complaints & Resolution Coordinator 8K000 – Software Development Specialist 8L100 – Air Advisor Basic 8L200 – Air Advisor Basic, Team Sergeant 8L300 – Air Advisor Basic, Team