First-line supervisors of mechanics, installers, and repairers perform work familiar to some military personnel.

Jobs in this career are similar to the following job classifications in the

120A
Construction Engineering Technician (Warrant Officer only)
13M
Multiple Launch Rocket System (MLRS)/High Mobility Artillery Rocket System (HIMARS) Crewmember (Enlisted)
13P
Multiple Launch Rocket System (MLRS) Operations/Fire Direction Specialist (Enlisted)
13R
Field Artillery (FA) Firefinder Radar Operator (Enlisted)
140E
Air and Missile Defense (AMD) Systems Tactician/Technician (Warrant Officer only)
140X
Air Defense Artillery (ADA) Immaterial (Warrant Officer only)
14E
PATRIOT Fire Control Enhanced Operator/Maintainer (Enlisted)
14G
Air Defense (AD) Battle Management System Operator (Enlisted)
14H
Air Defense (AD) Enhanced Early Warning System Operator (Enlisted)
14S
Air and Missile Defense (AMD) Crewmember (Enlisted)
14T
PATRIOT Launching Station Enhanced Operator/Maintainer (Enlisted)
151A
Aviation Maintenance Technician (Nonrated) (Warrant Officer only)
15K
Aircraft Components Repair Supervisor (Enlisted)
15Z
Aircraft Maintenance Senior Sergeant (Enlisted)
18E
Special Forces Communications Sergeant (Enlisted)
25T
Satellite/Microwave Systems Chief (Enlisted)
25W
Telecommunications Operations Chief (Enlisted)
25X
Chief Signal NCO (Enlisted)
353T
Intelligence Electronic Warfare (IEW) Systems Maintenance Technician (Warrant Officer only)
35S
Signals Collector/Analyst (Enlisted)
670A
Health Services Maintenance Technician (Warrant Officer only)
913A
Armament Systems Maintenance Warrant Officer (Warrant Officer only)
915A
Automotive Maintenance Warrant Officer (Warrant Officer only)
915E
Senior Automotive Maintenance Warrant Officer/Senior Ordnance Logistics Warrant Officer (Warrant Officer only)
919A
Engineer Equipment Maintenance Warrant Officer (Warrant Officer only)
91X
Maintenance Supervisor (Enlisted)
91Z
Senior Maintenance Supervisor (Enlisted)
921A
Airdrop Systems Technician (Warrant Officer only)
948B
Electronic Systems Maintenance Warrant Officer (Warrant Officer only)
948D
Electronic Missile Systems Maintenance Warrant Officer (Warrant Officer only)
948E
Senior Electronics Maintenance Warrant Officer (Warrant Officer only)
94W
Electronic Maintenance Chief (Enlisted)
94Z
Senior Electronic Maintenance Chief (Enlisted)

The following military occupations are no longer in active use:

13C
Tactical Automated Fire Control Systems Specialist (Enlisted)
13E
Cannon Fire Direction Specialist (Enlisted)
140B
FAAD Systems Technician (RC) (Warrant Officer only)
140D
HAWK System Technician (RC) (Warrant Officer only)
15Z
Field Artillery Missile-Rocket Senior Sergeant (Enlisted)
210A
Construction Engineering Technician (Warrant Officer only)
21R
SERGEANT Firing Set Repairman (Enlisted)
21U
SERGEANT Maintenance Chief (Enlisted)
250A
Telecommunications Technician (Warrant Officer only)
250B
Tactical Automated Network Technician (Warrant Officer only)
256A
Communications-Electronics Equipment Repair Technician (Warrant Officer only)
27Z
Missile Systems Maintenance Chief (Enlisted)
29W
Electronics Maintenance Supervisor (Enlisted)
29Z
Electronics Maintenance Chief (Enlisted)
31G
Tactical Communications Chief (Enlisted)
31T
Satellite/Microwave Systems Chief (Enlisted)
31W
Telecommunications Operations Chief (Enlisted)
31X
Communications Systems Circuit Control Supervisor (Enlisted)
31Y
Telecommunications Systems Supervisor (Enlisted)
31Z
Senior Signal Sergeant (Enlisted)
33Z
EW/Intercept Systems Maintenance Supervisor (Enlisted)
353A
Intelligence Electronic Warfare (IEW) Systems Maintenance Technician (Warrant Officer only)
35P
Avionic Equipment Maintenance Supervisor (Enlisted)
35V
Electronic and Missile Systems Maintenance Chief (Enlisted)
35W
Electronic Maintenance Chief (Enlisted)
35Z
Senior Electronics Maintenance Chief (Enlisted)
39W
Radar Special Electronic Devices Maintenance Chief (Enlisted)
63X
Maintenance Supervisor (Enlisted)
63Z
Mechanical Maintenance Supervisor (Enlisted)
67Z
Aircraft Maintenance Senior Sergeant (Enlisted)
68K
Aircraft Components Repair Supervisor (Enlisted)
912A
Land Combat Missile Systems Repair Technician (Warrant Officer only)
915B
Light Systems Maintenance Technician (Warrant Officer only)
915D
Unit Maintenance Technician (Heavy) (Warrant Officer only)
916A
High-to-Medium Altitude Air Defense (HIMAD) DS/GS Maintenance Tech (Warrant Officer only)
917A
Maneuver Forces Air Defense Systems (MFADS) Technician (Warrant Officer only)
918A
TMDE Maintenance Support (Warrant Officer only)
918B
Electronic Systems Maintenance Warrant Officer (Warrant Officer only)
918D
Electronics-Missile Maintenance Warrant Officer (Warrant Officer only)
918E
Senior Electronics Maintenance Warrant Officer (Warrant Officer only)
94V
Electronic and Missile Systems Maintenance Chief (Enlisted)