; aircraft modifications Subject to paragraph (4), the transfers under paragraph (1)— (A) shall be made as soon as practicable after the date of the enactment of this Act; and (B) may be carried out without further modifications to the aircraft by the United States. (4) Demilitarization The Secretary of Homeland Security shall ensure that before an aircraft specified under paragraph (2) is transferred under paragraph (1), such aircraft is demilitarized, as determined necessary by the Secretary. (b) Conditions of transfer Aircraft transferred to the State of California under this section— (1) may be used only for wildfire suppression purposes, including search and rescue or emergency operations pertaining to wildfires; (2) may not be flown outside of, or otherwise removed from, the United States unless dispatched by the National Interagency Fire Center in support of an international agreement to assist in wildfire suppression efforts or for other disaster-related response purposes approved by the Governor of California in writing in advance