The Marine Corps military occupational specialty (MOS) 3521 is Automotive Maintenance Technician. These Marines inspect, maintain, and repair motor transport equipment in the field. They must be ready to repair vehicles in a variety of conditions, including combat situations. The role of an Automotive Maintenance Technician is high priority because other soldiers depend on mechanics to provide reliable, consistent operating motor vehicles.
Other MOS codes in the Motor Transport field include:
3524 Fuel and Electrical Systems Technician
3526 Crash/Fire/Rescue Vehicle Technician
3529 Motor Transport Maintenance Chief
3531 Motor Vehicle Operator
3534 Semitrailer Refueler Operator
3536 Vehicle Recovery Operator