; (bb) in the case of a letter of request for a defined-order letter of offer and acceptance or associated amendments and modifications, not later than 100 days after such date; and (cc) in the case of a letter of request for a defined-order letter of offer and acceptance or associated amendments that involve extenuating factors, as approved by the Director of the Defense Security Cooperation Agency, not later than 150 days after such date. (II) Eligible foreign purchasers with special designations The Secretary of Defense shall ensure that an eligible foreign purchaser with a special designation that has submitted a letter of request for a letter of offer and acceptance receives a response— (aa) in the case of an eligible foreign purchaser that is a member of the national technology and industrial base— (AA) in the case of a letter of request for a defined-order letter of offer and acceptance, not later than 65 days after the date on which the letter of request is received by a United States security cooperation organization, the Defense Security Cooperation Agency, or other implementing agency; and (BB) in the case of a letter of request for a defined-order letter of offer and acceptance involving extenuating factors, as approved by the Director of the Defense Security Cooperation Agency, not later than 90 days after such date; (bb) in the case of Israel, Japan, the Republic of Korea, New Zealand, or an eligible foreign purchaser that is a member of the North Atlantic Treaty Organization or a major non-NATO ally— (AA) in the case of a letter of request for a defined-order letter of offer and acceptance, not later than 75 days after such date; and (BB) in the case of a letter of request for a defined-order letter of offer and acceptance involving extenuating factors, as approved by the Director of the Defense Security Cooperation Agency, not later than 100 days after such date