; (II) is designed to be operated, or is operating, from a fixed location pursuant to authorization by the Commission; and (III) is added to a tower, building, or other structure; (C) the term covered agency means— (i) the Department of Defense; (ii) the Department of the Interior; (iii) the Department of Agriculture; (iv) the Department of Commerce; (v) the Department of Transportation; (vi) the Department of Veterans Affairs; (vii) the United States Postal Service; (viii) the Federal Communications Commission; (ix) the Council on Environmental Quality; (x) the Advisory Council on Historic Preservation; (xi) the Department of Homeland Security; and (xii) the Executive Office of the President; (D) the term executive agency has the meaning given the term in section 102 of title 40, United States Code