Under what authority can a waiver be granted to prevent a member from being separated for a second alcohol-related incident?

The authority to grant a waiver to prevent a member from being separated for a second alcohol-related incident rests with the Naval Personnel Command. This body is responsible for overseeing personnel matters including the management of personnel policies, discipline, and other administrative actions within the Navy. Such waivers are typically considered on a case-by-case basis, taking into account the member's circumstances, conduct, and rehabilitation efforts.

While other entities like the Chief of Naval Operations and the Secretary of the Navy have overarching authority regarding policy and personnel decisions, the specific responsibility for approving waivers in this context falls under the purview of the Naval Personnel Command. Marine Corps Headquarters would handle similar matters for Marines, but they are not relevant to Navy personnel decisions directly. Consequently, the correct choice reflects the correct organizational authority responsible for these types of personnel actions.