; (C) a determination regarding whether additional security measures should be imposed on flights to the United States that originate from that airport; and (D) an explanation of the rationale for that determination. (b) Form of report Each report required by subsection (a) shall be submitted in unclassified form, but may include a classified annex. (c) Publication of list The list required by subsection (a)(1) shall be publicly and prominently posted on the website of the Department of Homeland Security on the date on which the report required by subsection (a) is submitted to Congress. F Cockpit and cabin security 1959. Federal air marshal service updates (a) Standardization (1) In general Not later than 60 days after the date of enactment of this Act, the Administrator shall develop a standard written agreement that shall be the basis of all negotiations and agreements that begin after the date of enactment of this Act between the United States and foreign governments or partners regarding the presence of Federal air marshals on flights to and from the United States, including deployment, technical assistance, and information sharing. (2) Written agreements Except as provided in paragraph (3), not later than 180 days after the date of enactment of this Act, all agreements between the United States and foreign governments or partners regarding the presence of Federal air marshals on flights to and from the United States shall be in writing and signed by the Administrator or other authorized United States Government representative. (3) Exception The Administrator may schedule Federal air marshal service on flights operating to a foreign country with which no written agreement is in effect if the Administrator determines that— (A) such mission is necessary for aviation security