; and (3) to execute all means available to achieve training and readiness goals and objectives of the Navy and Marine Corps with demonstrated institutional commitment to the adversary air training enterprise through the application of Department of the Navy policy and resources, partnering with the other Armed Forces, allies, and friends, and employing the use of industry contracted services. (b) Plan elements The plan required under subsection (a) shall include enterprise goals, objectives, concepts of operations, phased implementation timelines, analysis of expected readiness improvements, prioritized resource requirements, and such other matters as the Chief of Naval Operations and Commandant of the Marine Corps consider appropriate. (c) Submittal of plan and briefing Not later than March 1, 2018, the Chief of Naval Operations and Commandant of the Marine Corps shall provide to the Committees on Armed Services of the Senate and the House of Representatives a written plan and briefing on the plan required under subsection (a). D Other matters 331. Defense Siting Clearinghouse (a) Codification Chapter 7 of title 10, United States Code, is amended by inserting after section 183 the following new section: 183a. Defense Siting Clearinghouse for review of mission obstructions (a) Establishment (1) The Secretary of Defense shall establish a Defense Siting Clearinghouse (in this section referred to as the Clearinghouse ). (2) The Clearinghouse shall be— (A) organized under the authority, direction, and control of an Assistant Secretary of Defense designated by the Secretary