0861 fire support

The Marine Corps MOS 0861 is a Fire Support Marine. These Marines plan, observe, conduct, and control artillery and naval gunfire. Their duties include: Using laser designators and rangefinders Employing radar beacons for support ships Coordinating lethal and non-lethal fire support assets such as mortars, rockets, and cannons Planning, calling for, integrating, coordinating, observing, and adjusting artillery

The Marine Artillery Scout Observer Course (MASOC) is a training program that prepares Marines for the MOS 0861. The training is held at Fort Sill, Oklahoma.

The MOS 0861 requires a DoD secret security clearance.