; (2) by inserting after subsection (b) the following new subsection: (c) Authority to coordinate (1) In entering into an agreement under subsection (a) or undertaking a project under such agreement, the Secretary of Defense or the Secretary of a military department, as the case may be, may coordinate with any other covered official with an interest in the activities proposed to be undertaken under such agreement. (2) In this subsection, the term covered official means a Secretary concerned, the Director of the Army National Guard, or the Director of the Air National Guard. ; and (3) in subsection (h)(2)(D), as redesignated by paragraph (1), by striking subsection (d) and inserting subsection (e) . 315. Requirement for approval by Under Secretary of Defense for Acquisition and Sustainment of waiver for systems not meeting fuel efficiency key performance parameter Section 332(b) of the Duncan Hunter National Defense Authorization Act for Fiscal Year 2009 ( Public Law 110–417 ; 10 U.S.C. 2911 note) is amended— (1) by striking The Secretary of Defense and inserting the following: (1) In general. —The Secretary of Defense ; and (2) by adding at the end the following new paragraph: (2) Waiver of fuel efficiency key performance parameter (A) In general The fuel efficiency key performance parameter implemented pursuant to paragraph (1) may be waived with respect to a system only if— (i) such waiver is approved by the Under Secretary of Defense for Acquisition and Sustainment