Under the supervision of the Supervisor, and Lead the Fire Control and Optical Repairman performs a full range of field and sustainment maintenance (troubleshooting, repair, service and maintenance) on all related fire control and optical devices using the proper technical manuals and manufacture user manuals and specification. Performs field maintenance and sustainment maintenance on laser range finders, laser observation devices, laser designator, thermal imaging system, telescopes, auxiliary sights, aiming circles, night vision and all other fire control and optical equipment. Determines the nature and extent of repair if required; disassembles the item, examines parts and assemblies for serviceability, replaces parts as required. Safely uses common hand tool and test equipment.