; (4) identify how United States international relations in space situational awareness can be strengthened and cooperation improved; and (5) identify the barriers, including technical and policy issues, to improving such cooperation and what steps can be taken to overcome such barriers. (b) Transmittal Not later than 270 days after the date of the enactment of this Act, the Secretary shall transmit to the appropriate committees of Congress a copy of the study described in subsection (a), together with a Plan for implementing any recommended actions contained in such study and for coordinating with international partners and entities on standards and sharing of space situational awareness services and information, including associated data. 603. Report on international data sharing agreements Not later than 270 days after the date of the enactment of this Act, the Secretary of Defense shall submit to the appropriate committees of Congress a report on the status and plans for international data sharing agreements relating to the transition of certain space situational services and information in accordance with this Act. 604. Study on space traffic coordination Not later than one year after the date of the enactment of this Act, the Secretary, in consultation with the heads of other relevant Federal agencies, shall submit to the appropriate committees of Congress a study on how the United States Government can most effectively facilitate space traffic coordination, and any organizational or structural changes which Federal agencies would need to undertake to establish capabilities for space traffic coordination. VII GAO Review 701. GAO review Not later than three years after the date of the enactment of this Act, the Comptroller General of the United States shall submit to the appropriate committees of Congress a review of the status, performance, and progress of activities carried out under titles III and IV.