Air Force career fields under the 3XXX specialty codes (Support) include computer systems programming, Radio Communications, Electrical Power Production, HVAC, Fire Protection, EOD, Security Forces, Public Affairs, Education & Training and other areas.
3A0XX Knowledge Operations Management 3C0XX Communication-Computer Systems
3C1XX Information Systems Technology 3C2XX Network Integration
3D0XX Knowledge Operations Management 3D1XX Client Systems
3E0XX Electrical Systems 3E1XX Heating, Ventilation, AC, Refrigeration
3E2XX Pavement and Construction Equipment 3E3XX Structural
3E4XX Water and Fuel Systems Maintenance 3E5XX Engineering
3E6XX Operations Management 3E7XX Fire Protection
3E8XX Explosive Ordnance Disposal 3E9XX Emergency Management
3M0XX Services 3N0XX Public Affairs 3N1XX Regional Band
3N2XX Premier Band 3P0XX Security Forces 3S0XX Personnel
3S1XX Equal Opportunity 3S2XX Education and Training
3S3XX Manpower