Execute information transfer with state-of-the-art multi-media technology such as fiber optics, digital microwave, and tactical and commercial satellites on a global basis; operate, manage and provide hardware and software support to multi-media Automated Information Systems (AIS) to include: mainframes, mini, and microcomputers, Local Area Networks (LAN's), Wide Area Networks (WAN's), and telecommunications; apply diagnostic and restoral techniques utilizing knowledge of electronic and operational system theory; advise on capabilities, limitations, and condition of equipment; implement production control procedures including input/output quality control support; implement and monitor security procedures; perform assigned mission organizational level maintenance and repair of Command, Control, Communications, Computer, and Intelligence Systems.

Perform duties as assistants in the prevention and treatment of disease and injury; including first aid and preventive medicine procedures; assist with physical examinations; provide patient care and the administration of medicinals and parenteral solutions; perform general laboratory, pharmacy and other patient support services; assist in the administrative supply and accounting procedures within medical departments ashore, afloat and with the Marine Corps; instruct medical and non-medical personnel in first aid, self aid, personal hygiene and medical records maintenance and assist in the transportation of the sick and injured; assist in the maintenance of environmental health standards; be prepared to assist in the prevention and treatment of chemical, biological and radiological (CBR) casualties and other contingencies; senior hospital corpsmen perform supervisory, technical, planning and management functions in support of medical readiness and quality health care delivery; In addition to their general assignments, hospital corpsmen trained as technicians perform specialized functions within the operational forces, clinical specialities, administrative departments and may be assigned independent of a medical officer.

ETs are responsible for electronic equipment used to send and receive messages, detect enemy planes and ships, and determine target distance. They must maintain, repair, calibrate, tune, and adjust all electronic equipment used for communications, detection and tracking, recognition and identification, navigation, and electronic countermeasures.