; (2) flight from prosecution; (3) destruction of or tampering with evidence; (4) intimidation of potential witnesses; or (5) otherwise seriously jeopardizing an investigation or unduly delaying a trial. (c) Extension Upon request by a governmental entity, a court may grant one or more extensions, for periods of up to 180 days each, of an order granted in accordance with subsection (b). . 5. Rule of construction Nothing in this Act or an amendment made by this Act shall be construed to preclude the acquisition by the United States Government of— (1) the contents of a wire or electronic communication pursuant to other lawful authorities, including the authorities under chapter 119 of title 18 (commonly known as the Wiretap Act ), the Foreign Intelligence Surveillance Act of 1978 ( 50 U.S.C. 1801 et seq.), or any other provision of Federal law not specifically amended by this Act; or (2) records or other information relating to a subscriber or customer of any electronic communication service or remote computing service (not including the content of such communications) pursuant to the Foreign Intelligence Surveillance Act of 1978 ( 50 U.S.C. 1801 et seq.), chapter 119 of title 18 (commonly known as the Wiretap Act ), or any other provision of Federal law not specifically amended by this Act.