The Army and Marine Corps call their enlisted jobs "MOS's," or "Military Occupation Specialties." The Navy and Coast Guard call their enlisted jobs "ratings." But, in the Air Force, enlisted jobs are known as "AFSCs," or "Air Force Specialty Codes."
The Air Force divides their AFSCs (enlisted jobs) into the following overall categories: Operations, Maintenance & Logistics, Support, Medical & Dental, Legal & Chaplain, Finance & Contracting, and Special Investigations. Withing these categories, AFSCs are further assigned to "career fields." A career field may have one AFSC assigned to it, or it may have several. AFSCs with similar functions are grouped together in the same career field.
MAINTENANCE & LOGISTICS
2E - Comm-Elec/WireSystems Maintenance
3A - Information Management
3C - Communication-Computer Systems
MEDICAL & DENTAL
SPECIAL DUTY ASSIGNMENTS
Special Duty Assignments are usually jobs that a member performs temporarily, working outside of their normal AFSC. When the special duty tour is completed, members usually return to their primary AFSC (enlisted job). Examples would be recruiter, first sergeant, or military training instructor.