(8) of section 4(b). (b) Failure To provide certification If the President is unable to make the certification described in subsection (a) with respect to a calendar year, the President may not provide logistic support, maintenance, or supply replacement parts to the recipient country for the remainder of such calendar year. 6. Definitions In this Act: (1) Appropriate congressional committees The term appropriate congressional committees means the Committee on Foreign Affairs of the House of Representatives and the Committee on Foreign Relations of the Senate. (2) Covered defense articles and defense services The term covered defense articles and defense services means— (A) the F–35 Joint Strike Fighter aircraft and associated services