Which of the following NAUI specialty courses does not require training department authorization?

The Training Assistant course is considered a foundational step and is designed for individuals who wish to assist instructors in teaching scuba courses. It typically does not require special authorization from the training department because it is aimed at engaging new divers in the instructional process and developing their teaching skills. This course is more about practical involvement and mentorship, making it accessible with standard training requirements rather than needing additional approvals.

In contrast, the other courses listed generally involve more advanced skills or instructor-level training, which often requires higher levels of oversight, experience, or specific authorizations due to their complexity and the responsibilities involved in teaching and leading others in the sport. The need for authorization in those cases ensures that instructors meet necessary standards and are qualified to impart essential skills and safety knowledge to new divers.