a petition for judicial review in any court described in subsection (a)(5) of section 3486. (B) Application Not later than 30 days after the date of receipt of a notification under subparagraph (A), the Government shall apply for an order prohibiting the disclosure of the existence or contents of the relevant subpoena. An application under this subparagraph may be filed in the district court of the United States for the judicial district in which the recipient of the subpoena is doing business or in the district court of the United States for any judicial district within which the authorized investigation that is the basis for the subpoena is being conducted. The applicable nondisclosure requirement shall remain in effect during the pendency of proceedings relating to the requirement. (C) Consideration A district court of the United States that receives a petition under subparagraph (A) or an application under subparagraph (B) should rule expeditiously, and shall, subject to paragraph (3), issue a nondisclosure order that includes conditions appropriate to the circumstances. (2) Application contents An application for a nondisclosure order or extension thereof or a response to a petition filed under paragraph (1) shall include a certification from the Federal official who issued the subpoena indicating that the absence of a prohibition of disclosure under this subsection may result in— (A) endangering the life or physical safety of an individual