Who serves as the Inspector General of the Department of Defense?

The Inspector General of the Department of Defense (DoD) plays a crucial role in ensuring accountability and oversight within the department. This individual is responsible for conducting inspections, investigations, and audits to prevent and detect fraud, waste, and abuse of resources throughout the DoD. By serving as the primary oversight authority, the Inspector General is tasked with enhancing the efficiency and integrity of the department's operations, thus contributing significantly to the overall governance and effectiveness of the military organization.

In contrast, the other positions mentioned, such as the Director of the National Security Agency, the Secretary of Defense, and the Director of the Defense Intelligence Agency, have distinct roles and responsibilities primarily focused on intelligence and defense policies. They do not encompass the specific oversight and investigative functions carried out by the Inspector General. Therefore, the correct choice highlights the specific office dedicated to maintaining internal compliance and accountability within the DoD.