United States Secretary of Defense to die was Frank Carlucci (1987–1989), on 3 June 2018. United States Secretary of Defense The Secretary of Defense (SecDef) is the leader and chief executive officer of the United States Department of Defense, the executive department of the Armed Forces of the United States. The Secretary of Defense's position of command and authority over the United States' military is second only to that of the President and Congress, respectively. This position corresponds to what is generally known as a Defense Minister in many other countries. The Secretary of Defense is appointed by the President with the advice and consent
Assistant Secretary of Defense for Nuclear, Chemical & Biological Defense Programs Reduction Program (CTR). The Director of DTRA reports directly to the Assistant Secretary of Defense for Nuclear, Chemical & Biological Defense Programs. Before the National Defense Authorization Act for Fiscal Year 2011 on January 7, 2011, the Assistant Secretary of Defense for Nuclear, Chemical & Biological Defense Programs was known as the "Assistant to the Secretary of Defense for Nuclear & Chemical & Biological Defense Programs". Three Deputy Assistant Secretaries of Defense report to the Assistant Secretary of Defense for Nuclear Chemical & Biological Defense Programs: In addition, the Director of the Defense Threat Reduction Agency reports directly to the