; (B) the heads of each of— (i) the Office of Science and Technology Policy; (ii) the Council on Environmental Quality; (iii) the Domestic Policy Council; (iv) the National Economic Council; (v) the Council of Economic Advisers; and (vi) the National Security Council; (C) the Executive Officer of the Steering Committee, who shall be designated by the Chair of the Steering Committee; and (D) a senior official holding the rank of Deputy Secretary or higher (or an equivalent officer) from each of— (i) the Department of Agriculture; (ii) the Department of Commerce; (iii) the Department of Defense; (iv) the Department of Energy; (v) the Department of Health and Human Services; (vi) the Department of the Interior; (vii) the Department of Justice; (viii) the Department of Labor; (ix) the Department of State; (x) the Department of Transportation; (xi) the Office of the Director of National Intelligence; (xii) the Environmental Protection Agency; (xiii) the National Aeronautics and Space Administration; (xiv) the National Science Foundation; (xv) the Arctic Research Commission; (xvi) the Office of Management and Budget; and (xvii) such other agencies or offices as the Chair of the Steering Committee determines to be appropriate. (3) Administration (A) Chair The Secretary of Homeland Security shall be the Chair of the Steering Committee. (B) Vice chair The Director of the Office of Science and Technology Policy shall be the Vice Chair of the Steering Committee. (C) Meetings Under the leadership of the Chair of the Steering Committee, the Steering Committee shall meet quarterly or, as the Chair of the Steering Committee determines to be appropriate, more frequently— (i) to shape priorities for the Steering Committee; (ii) to establish the strategic direction of the Steering Committee; (iii) to oversee implementation of activities of the Steering Committee