; or (vii) otherwise seriously endangering the national security of the United States; and (C) an explanation of how the nondisclosure requirement is narrowly tailored to address the specific harm identified under subparagraph (B). ; (2) in subsection (c), by adding at the end the following: (5) If a judge who issues an order under this subsection upon an application made pursuant to this section that includes a request for a nondisclosure requirement described in subsection (d) finds that the requirements of subsection (b)(3) have been met, such order shall include a nondisclosure requirement that applies for a period of up to 1 year, unless the judge determines that the facts justify a longer period of nondisclosure, subject to the principles and procedures described in subsection (d). ; and (3) by amending subsection (d) to read as follows: (d) Nondisclosure (1) In general No person who receives an order entered under subsection (c) that contains a nondisclosure requirement shall disclose to any person the particular information specified in the nondisclosure requirement during the time period to which the requirement applies. (2) Exception (A) In general A person who receives an order entered under subsection (c) that contains a nondisclosure requirement may disclose information otherwise subject to any applicable nondisclosure requirement to— (i) those persons to whom disclosure is necessary to comply with the order; (ii) an attorney to obtain legal advice or assistance regarding the order