The US Army MOS 94A, use advanced electronic skills to perform maintenance on a variety of missile systems and determine shortcomings and malfunctions in electronic, electrical, mechanical, and circuit elements. The land combat electronic missile system repairer supervises or performs direct support and general support (DS/GS) level maintenance on the TOW and DRAGON missile systems, the Bradley Fighting Vehicle System (BFVS) and JAVELIN system.

The US Army MOS 94H, Test, Measurement, and Diagnostic Equipment (TMDE) Maintenance Support Specialist, is responsible for maintaining the Army's precision instruments and equipment. This includes calibrating, repairing, and ensuring the accuracy of various TMDE devices, including weapon-aiming devices, weather instruments, engineering instruments, and electrical test instruments.

The US Army MOS 94P, Multiple Launch Rocket System (MLRS) Repairer, involves performing and supervising maintenance on the MLRS and High Mobility Artillery Rocket System (HIMARS). This includes troubleshooting, repairing, and maintaining the electrical, mechanical, and hydraulic systems of the M270, M270A1, HIMARS, and related equipment.

The US Army MOS 94T, Short Range Air Defense System Repairer, focuses on maintaining and repairing the Avenger system, a mobile weapons system for short-range air defense. This MOS involves both supervising and performing maintenance on the Avenger system and its associated components.

The US Army MOS 94Y is for the Automatic Test Systems Operator/Maintainer. This MOS involves operating, performing, and supervising field maintenance on various automated test systems, including the NGATS (Next Generation Automatic Test System), DSETS (Direct Support Electrical Test System), and BSTF (Base Shop Test Facility). 94Y Soldiers also perform electronic maintenance, adjustments, tests, and repairs on combat vehicles, fire control systems, and related equipment.

The US Army MOS 89A, Ammunition Stock Control and Accounting Specialist, focuses on managing ammunition inventory and accounting for its usage. This involves operating the Standard Ammunition and Accounting System (SAAS) to track stock levels, issue ammunition, and perform other related functions.

The U.S. Army MOS (Military Occupational Specialty) 89B is the designation for an Ammunition Specialist. These Soldiers are responsible for receiving, storing, and issuing conventional ammunition, guided missiles, large rockets, and other ammunition-related items.

The U.S. Army MOS 89D is the designation for an Explosive Ordnance Disposal (EOD) Specialist. These specialists are responsible for locating, identifying, rendering safe, and disposing of explosive devices and hazardous materials, including conventional, chemical, and improvised explosives.