Electronics Technicians (Submarine) (ET) operate and perform maintenance on electronic equipment used for detection, tracking, recognition and identification, aids to navigation, radar, interior communications, alarm, warning, ship's control, entertainment, gyrocompass and plotting, electronic warfare systems, and instrumentation and control; operate and perform maintenance on general purpose test equipment, personal computers, and auxiliary equipment; operate, monitor, and control information systems in support of the world-wide telecommunications network; perform assigned mission organizational level maintenance and repair of Command, Control, Communications, Computer and Intelligence Systems; and stand watch on related equipment.

Fire Control Technicians (FT) perform organizational and intermediate level maintenance on submarine combat control systems, equipment, and associated combat control systems test equipment; operate submarine combat control systems; test submarine combat control systems; operate and maintain combat control systems associated systems; and participate in weapons handling functions and operate and maintain nontactical computer systems and peripherals.

Fire Controlmen (FC) provide system employment recommendations; perform organizational and intermediate maintenance on digital computer equipment, subsystems, and systems; operate and maintain combat and weapons direction systems, surface-to-air and surface-to-surface missile systems, and gun fire control systems at the organizational and intermediate level; inspect, test, align, and repair micro/minicomputers and associated peripheral equipment, data conversion units, data display equipment, data link terminal equipment, print devices, and system related equipment; make analyses for detailed systems, computer programs, electronics, and electronic casualty control; and operate associated built-in and external test equipment; load, initialize, and run preprogrammed diagnostic, performance and testing routines for digital computer equipment, digital subsystems, digital systems, and overall combat systems.