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

013
Electronics (Warrant Officer only)
015
Aviation Engineering (Warrant Officer only)
017
Material Maintenance (Warrant Officer only)
114
URL - Special Operations (EOD/DIV/SAL/EOM) (Commissioned 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)
144
RL - Engineering Duty Officer - Ship Engineering (Commissioned 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)
150
RL - Aerospace Engineering (Commissioned Officer only)
151
RL - Aerospace Engineering Duty Officer - Aerospace Engineering (Commissioned Officer only)
152
RL - Aerospace Engineering Duty Officer - Aviation Maintenance (Commissioned Officer only)
18E
Special Forces Communications Sergeant (Enlisted)
35S
Signals Collector/Analyst (Enlisted)
613
LDO - Engineering/Repair, Surface (Commissioned Officer only)
616
LDO - Ordnance, Surface (Commissioned Officer only)
618
LDO - Electronics, Surface (Commissioned Officer only)
623
LDO - Engineering/Repair, Submarine (Commissioned Officer only)
626
LDO - Ordnance, Submarine (Commissioned Officer only)
62
Aircraft Maintenance, Overhaul, Repair and Supply (Commissioned Officer only)
633
LDO - Maintenance, Aviation (Commissioned Officer only)
636
LDO - Ordnance, Aviation (Commissioned Officer only)
648
LDO - Explosive Ordnance Disposal (Commissioned Officer only)
64
Aviation Electronics (Commissioned Officer only)
713
CWO - Engineering Technician, Surface (Warrant Officer only)
716
CWO - Ordnance Technician, Surface (Warrant Officer only)
717
CWO - Special Warfare Combatant-Craft (Warrant Officer only)
718
CWO - Electronics Technician, Surface (Warrant Officer only)
726
CWO - Ordnance, Submarine (Warrant Officer only)
733
CWO - Aviation Maintenance Technician (Warrant Officer only)
736
CWO - Ordnance, Aviation (Warrant Officer only)
748
CWO - Explosive Ordnance Disposal (Warrant Officer only)
921A
Airdrop Systems Technician (Warrant Officer only)
FC
Fire Controlman (Enlisted)
FT
Fire Control Technician (Enlisted)
GM
Gunner's Mate (Enlisted)
MT
Missile Technician (Enlisted)
SB
Special Warfare Boat Operator (Enlisted)
STG
Sonar Technician (Surface) (Enlisted)
STS
Sonar Technician (Submarine) (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)
167
RL - Special Duty - Merchant Marine, Engineering (Commissioned Officer only)