for architecture development (1) Designation Not later than 90 days after the date of the enactment of this Act, the Secretary of Defense shall designate a senior official of the Department of Defense who shall be responsible for the architecture specified in subsection (a). (2) Duties The duties of the official designated under paragraph (1) shall include the following: (A) Designing the defensive architecture for the United States. (B) Overseeing development of an integrated missile defense acquisition strategy for the United States. (C) Ensuring the budgets of each military department and defense agency are appropriate for the architecture required by subsection (a). (D) Siting the integrated missile defense systems comprising the architecture described in subsection (a). (E) Overseeing long-term acquisition and sustainment of the architecture. (F) Such other duties as the Secretary determines appropriate. (3) Report required Concurrent with the submission of each budget of the President under section 1105(a) of title 31, United States Code, until the end of the period specified in paragraph (4), the official designated under paragraph (1) shall submit to the congressional defense committees a report on the actions taken by the official to carry out the duties set forth under paragraph (2). (4) Termination The authority of this subsection shall terminate on the date that is 3 years after the date on which the official designated under paragraph (1) determines that the integrated missile defense architecture described in subsection (a) has achieved initial operational capability. (d) Congressional defense committees defined In this section, the term congressional defense committees means— (1) the Committee on Armed Services and the Committee on Appropriations of the Senate