; and (2) the requirements set forth in the Arms Export Control Act ( 22 U.S.C. 2751 et seq. ). (b) Conditions Except in the case of an emergency, as determined by the President, a transfer under subsection (a) may only occur if the transfer— (1) does not affect the ability of the United States to maintain a sufficient aerial refueling capacity to satisfy United States warfighting requirements; (2) does not harm the combat readiness of the United States; (3) does not affect the ability of the United States to meet its commitments to allies with respect to the transfer of aerial refueling capacity; and (4) is in the national security interest of the United States. (c) Certification (1) In general Except in the case of an emergency, as determined by the President, not later than 15 days before making a transfer under subsection (a), the Secretary of Defense shall certify to the appropriate congressional committees that the transfer meets the conditions specified in subsection (b). (2) Emergencies In the case of an emergency, as determined by the President, not later than five days after making a transfer under subsection (a), the President shall— (A) certify to the appropriate congressional committees that the transfer supports the national security interests of the United States; and (B) provide to the appropriate congressional committees an assessment of the impacts, risks, and mitigation measures with respect to the matters referred to in paragraphs (1) through (4) of subsection (b). (d) Appropriate congressional committees defined In this section, the term appropriate congressional committees means— (1) the Committee on Armed Services and the Committee on Foreign Affairs of the House of Representatives