; (ii) a mission described in section 130i of title 10, United States Code; or (iii) a mission described in section 4510 of the Atomic Energy Defense Act ( 50 U.S.C. 2661 ). (B) Requirements Any support or assistance provided by the Secretary or the Attorney General shall only be granted— (i) for the purpose of fulfilling the roles and responsibilities of the Federal agency or department that made the request for the mission for which the request was made; (ii) when exigent circumstances exist; (iii) for a specified duration and location; (iv) within available resources; (v) on a non-reimbursable basis; and (vi) in coordination with the Administrator of the Federal Aviation Administration. (n) Semiannual briefings and notifications (1) In general On a semiannual basis beginning 180 days after the date of enactment of the Safeguarding the Homeland from the Threats Posed by Unmanned Aircraft Systems Act of 2023 , the Secretary and the Attorney General shall each provide a briefing to the appropriate committees of Congress on the activities carried out pursuant to this section. (2) Requirement The Secretary and the Attorney General each shall conduct the briefing required under paragraph (1) jointly with the Secretary of Transportation. (3) Content Each briefing required under paragraph (1) shall include— (A) policies, programs, and procedures to mitigate or eliminate impacts of activities carried out pursuant to this section to the national airspace system and other critical infrastructure relating to national transportation; (B) a description of— (i) each instance in which any action described in subsection (e) has been taken, including any instances that may have resulted in harm, damage, or loss to a person or to private property