; or (2) an officer, employee, or contractor of the Federal Government or any bureau, department, instrumentality, or other agency of the Federal Government if the officer, employee, or contractor is authorized by the Federal Government or any bureau, department, instrumentality, or other agency of the Federal Government to operate a system or technology referred to in subsection (a)(1). (d) Briefing to Congress Not later than 1 year after the date of enactment of this section, and annually thereafter, the Administrator shall brief the appropriate committees of Congress on any enforcement actions taken (including any civil penalties imposed) using the authority under this section. . (b) Clerical amendment The analysis for chapter 448 of title 49, United States Code, as amended by sections 803(b) and 808(b), is amended by inserting after the item relating to section 44812 the following: 44813. Unmanned aircraft system detection and mitigation enforcement. . 812. Recreational operations of drone systems (a) In general Section 44809 of title 49, United States Code, is amended— (1) in subsection (a) by striking paragraph (6) and inserting the following: (6) Except for circumstances when the Administrator establishes alternative altitude ceilings or as otherwise authorized in subsection (c)(2), in Class G airspace, the aircraft is flown from the surface to not more than 400 feet above ground level and complies with all airspace and flight restrictions and prohibitions established under this chapter, such as special use airspace designations and temporary flight restrictions. ; (2) in subsection (c)— (A) in paragraph (1) by striking organization conducting a sanctioned event and inserting organization sponsoring operations ; (B) by redesignating paragraph (2) as paragraph (3); (C) in paragraph (3) (as so redesignated)— (i) in the paragraph heading by striking weighing more than 55 pounds and inserting weighing 55 pounds or greater