; (bb) the Secretary of Defense shall appoint 1 member to the Board; (cc) the Secretary of Veterans Affairs shall appoint 1 member to the Board; (dd) the Secretary of Education shall appoint 1 member to the Board; and (ee) the Administrator of the National Aeronautics and Space Administration shall appoint 1 member to the Board. (II) Terms (aa) In general The members appointed under subclause (I) shall serve for a term of 3 years and may be reappointed. (bb) Staggering terms To ensure subsequent appointments to the Board are staggered, of the 9 members first appointed under subclause (I), 3 shall be appointed for a term of 1 year, 3 shall be appointed for a term of 2 years, and 3 shall be appointed for a term of 3 years. (III) Consideration In considering whom to appoint to the Board, the Secretaries and Administrator referenced in subclause (I) shall, to the maximum extent practicable, ensure the overall composition of the Board adequately represents the fields of aviation and academia. (B) Vacancies A vacancy on the Board shall be filled in the same manner as the initial appointment. (C) Status All Members of the Board shall have equal voting powers, regardless if they are ex-officio members or appointed. (4) Chair of the Board The Board shall choose a Chair of the Board from among the members of the Board that are not ex-officio members under paragraph (3)(A)(i). (5) Administrative matters (A) Meetings (i) In general The Board shall meet at the call of the Chair but not less than 2 times each year and may, as appropriate, conduct business by telephone or other electronic means. (ii) Open (I) In general Except as provided in subclause (II), a meeting of the Board shall be open to the public. (II) Exception A meeting, or any portion of a meeting, may be closed if the Board, in public session, votes to close the meeting because the matters to be discussed— (aa) relate solely to the internal personnel rules and practices of the Center