; and (2) in the case of a certificate, license, or other grant of authority awarded on or after the date of the enactment of this section, as soon as is practicable after the date of approval of such certificate, license, or other grant of authority. 340. Warrants required for generalized surveillance (a) In general A governmental entity (as defined in section 2711 of title 18, United States Code) may not use an unmanned aircraft system or request information or data collected by another person using an unmanned aircraft system for protective activities, or for law enforcement or intelligence purposes, except pursuant to a warrant issued using the procedures described in the Federal Rules of Criminal Procedure (or, in the case of a State court, issued using State warrant procedures) by a court of competent jurisdiction, or as permitted under the Foreign Intelligence Surveillance Act of 1978 ( 50 U.S.C. 1801 et seq.). (b) Exceptions (1) In general Subsection (a) shall not apply in a case in which a governmental entity is using an unmanned aircraft system in exigent circumstances (as defined in paragraph (2)). (2) Exigent circumstances defined Exigent circumstances exist when— (A) a law enforcement entity reasonably believes there is an imminent danger of death or serious physical injury