of 8.70% Senior Debentures due May 2030 (the '2030 NAI Notes"); and e) $400,000,000 of 8.00% Senior Debentures due May 2031 (the '2031 NAI Notes"). The NAI Medium-Term Notes, 2026 NAI Notes, 2029 NAI Notes, 2030 NAI Notes and 2031 NAI Notes are collectively referred to as the "NAI Notes." Interest. Interest on the NAI N

the NAI Notes is payable semiannually. Guarantees. The NAI Notes are not guaranteed. Security. The NAI Notes are unsecured. Optional Redemption. The NAI Medium-Term Notes and the 2026 NAI Notes are not redeemable or repayable prior to maturity. The 2029 NAI Notes, 2030 NAI Notes, and 2031 NAI Notes are redeemable in w