; (2) intelligence, electronic warfare, and information warfare operations, testing (including at Federal Aviation Administration-approved testing sites), analysis, and training; or (3) research to inform unmanned aircraft system data-driven policy decisions, safety assessments, procedures, rulemaking, and standards to safely integrate emerging entrants into the national airspace system (including at Federal Aviation Administration-approved testing sites). (c) Waiver The Administrator may waive the restrictions under subsection (a) on a case by case basis by certifying, in writing, to the Secretary of Homeland Security and the appropriate committees of Congress that the operation, procurement, or contracting action is required in the public interest. (d) Replacement of covered unmanned aircraft systems Not later than 1 year after the date of enactment of this section, the Administrator shall replace any covered unmanned aircraft system that is owned or operated by the Federal Aviation Administration as of the date of enactment of this section with an unmanned aircraft system manufactured in the United States or an allied country (as that term is defined in section 2350f(d)(1) of title 10, United States Code). (e) Report to Congress Not later than 180 days after the date of enactment of this section, the Administrator shall submit to the appropriate committees of Congress a report that includes— (1) a description of the changes the Federal Aviation Administration has made to its operation, procurement, and contracting processes to ensure that the Administration does not acquire any covered unmanned aircraft system; (2) the number of covered unmanned aircraft systems that needed to be replaced in accordance with subsection (d), including— (A) an explanation of the purposes for which such covered unmanned aircraft systems were used; (B) a description of the unmanned aircraft systems that the Administrator will purchase to replace such covered unmanned aircraft systems