; and (ii) to respond to any new threat to such space assets. (F) The current organizational structure of the national security space enterprise with respect to roles, responsibilities, and authorities. (G) Any emerging space threat the Secretary expects the United States to confront during the 10-year period beginning on the date of the enactment of this Act. (H) Such other matters as the Secretary considers appropriate. (2) Report (A) In general Not later than March 29, 2019, the Secretary shall submit to the congressional defense committees a report on the findings of the review under paragraph (1). (B) Form The report under subparagraph (A) shall be submitted in unclassified form, but may include a classified annex. 1603. Report on enhancements to the Global Positioning System Operational Control Segment (a) In general Not later than one year after the date of the enactment of this Act, the Secretary of Defense shall submit to the congressional defense committees a report that identifies whether the current Global Positioning System Operational Control Segment (OCS) can be incrementally improved to achieve capabilities similar to the Next Generation Operational Control Segment (OCX) used to operate the Global Positioning System III. (b) Elements The report required under subsection (a) shall include the following elements: (1) A cybersecurity review of both OCS and OCX to determine the specific cybersecurity improvements needed to operate the system through 2030, including— (A) the cybersecurity improvements to OCS needed to match the cybersecurity capabilities that OCX is intended to provide; (B) any additional OCS cybersecurity protections needed beyond those OCX is intended to provide