; and (B) revise such guidelines as the Under Secretary considers appropriate. (2) Updated OMB policies and principles for Federal agencies Not later than 180 days after the Under Secretary makes a revision pursuant to paragraph (1), the Director, in consultation with the Director of the Cybersecurity and Infrastructure Security Agency of the Department of Homeland Security, shall update any policy or principle issued under subsection (b)(1) as necessary to ensure those policies and principles are consistent with the review and any revision under paragraph (1) under this subsection and paragraphs (2) and (3) of subsection (b). (d) Revision of Federal Acquisition Regulation The Federal Acquisition Regulation shall be revised as necessary to implement any standards and guidelines promulgated in this section. 4. Guidelines on the disclosure process for security vulnerabilities relating to unmanned aircraft systems (a) In general (1) Guidance The Director shall issue guidance to agencies that includes— (A) requirements for the reporting, coordinating, and receiving of information about— (i) a security vulnerability relating to an unmanned aircraft system owned or controlled by an agency; and (ii) the resolution of a security vulnerability described in clause (i)