The Executive Branch of the United States Government consists of the President, Vice-President, Cabinet and several other organizations grouped into the Executive Office of the President. The President serves as the governmental Head-of-State and as the Commander-in-Chief of the U.S. military. The Vice-President serves as the President's principal advisor and is the president of the Senate. The Vice-President assumes the presidency upon the death of the President. The Cabinet consists of the top officials in 15 executive Secretaries (such as the Secretary of the Treasury and the Secretary of Defense) that deal with specific national and international affairs.