EX-99.1 2 a2190237zex-99_1.txt EXHIBIT 1 --------- AGREEMENT AS TO JOINT FILING OF SCHEDULE 13G -------------------------------------------- Each of the undersigned hereby affirms that it is individually eligible to use Schedule 13G, and agrees that this Schedule 13G is filed on its behalf. Dated: February 12, 2010 CITIGROUP TRUST-DELAWARE, N.A. As Trustee for Eternity Four Trust By: /s/ William Hearn -------------------------------------------- Name: William Hearn Title: President CITIBANK, N.A. By: /s/ Ali L. Karshan -------------------------------------------- Name: Ali L. Karshan Title: Assistant Secretary CITICORP By: /s/ Ali L. Karshan -------------------------------------------- Name: Ali L. Karshan Title: Assistant Secretary CITIGROUP INC. By: /s/ Ali L. Karshan -------------------------------------------- Name: Ali L. Karshan Title: Assistant Secretary