; and (2) persistent intelligence, surveillance, and reconnaissance capabilities with enhanced detection and indications and warning are necessary to maintain situational awareness and provide adequate decisions space for the United States Pacific Command and United States Forces Korea. (b) Plan (1) In general The Secretary of Defense, in consultation with the Director of National Intelligence, shall develop and implement a plan for enhancing the sharing of commercial imagery and national technical means with the Governments of South Korea and Japan, consistent with the national security of the United States and with the protection of sources and methods. The Secretary shall implement such plan with the goal of enhancing detection, indications, and warning, in order to improve joint non-proliferation, counterproliferation, and ballistic missile detection and defense capabilities. (2) Briefing Not later than 180 days after the date of the enactment of this Act, the Secretary of Defense, in coordination with the Director of National Intelligence, shall provide to the appropriate congressional committees a briefing on the plan under paragraph (1). (3) Appropriate congressional committees In this subsection, the term appropriate congressional committees means— (A) the Committee on Armed Services of the Senate and the Committee on Armed Services of the House of Representatives