What is the primary responsibility of the secretary of defense? science forums

The primary role of the Secretary of Defense is to act as a leader of the United States military. The Secretary of Defense also acts as a Chief Executive Officer of the Department of Defense. The role also acts as the leader of the Army, Marine, Navy, and Air Force. The Secretary of Defense as of today is James Mattis which sworn last January 20, 2017.

its kind of blury sorry

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