for unmanned aircraft detection and mitigation systems. (4) Recommendations for any legislative or regulatory changes related to mitigation or detection or identification of unmanned aircraft systems. 347. Actively tethered public UAS (a) In general Not later than 180 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall issue such regulations as are necessary to authorize the use of certain actively tethered public unmanned aircraft system by government public safety agencies without any requirement to obtain a certificate of waiver, certificate of authorization, or other approval by the Federal Aviation Administration. (b) Requirements The regulations issued pursuant to subsection (a) shall establish risk-based operational conditions for operation of actively tethered public unmanned aircraft systems by government public safety agencies that recognize and accommodate the unique operational circumstances of such systems, including the requirements that the aircraft component may only be operated— (1) within the line of sight of the operator