Who is the Secretary of Defense?

• A. The principal defense policy advisor to the U.S. President.
• B. The commander of the U.S. Strategic Command.
• C. The head of the Department of Homeland Security.
• D. The Chair of the Joint Chiefs of Staff.

Answer: (A)

That description refers to the Secretary of Defense, who is the civilian head of the Department of Defense and serves as the principal defense policy adviser to the President. This role involves shaping and communicating defense policy, overseeing budgeting and resources for the armed forces, and ensuring civilian control of the military. It’s different from the commander of U.S. Strategic Command, who runs a unified combatant command; from the head of Homeland Security, who leads DHS; and from the Chair of the Joint Chiefs of Staff, who is the top military adviser to the President and Secretary of Defense but does not head the department itself.