Officer technicians in the operational fields of horizontal and vertical construction, facilities maintenance, utilities, and automotive and construction equipment. They help plan, coordinate, and direct the technical, operational, training, and administrative responsibilities of Naval Construction Force units, assist in planning, scheduling, and operations of public works departments within the Navy shore establishment. They supervise personnel engaged in horizontal and vertical construction, maintenance and repair (including buildings, airfields, waterfront structures, and utilities systems), and in the operation, testing, maintenance, and repair of automotive and construction equipment. An Officer of the Regular Navy who is on the retired list.