EXHIBIT 3.51 ARTICLES OF INCORPORATION OF TWO PAC COMPANY KNOW ALL MEN BY THESE PRESENTS: That I, the undersigned, for the purpose of forming a corporation under the laws of the State of Nevada, do certify: ARTICLE I The name of the corporation is: TWO PAC Company. ARTICLE II The principal place of business of the corporation shall be: 1325 Airmotive Way, Suite 100, Reno 89502. The Corporation's resident agent shall be: The Corporation Trust Company of Nevada One East First Street, Reno, Nevada 89501 ARTICLE III The nature of the business and the objects and purposes to be transacted, promoted, or carried on by the corporation are to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of Nevada. ARTICLE IV The corporation shall have authority to issue the following: The number of shares of common stock which this corporation is authorized to issue is One Hundred thousand (100,000) shares with a par value of One Cent ($.01) per share. ARTICLE V The number of the Board of Directors shall be: The Board of Directors will consist of one (1) to nine (9). The person who is to serve as Director until the first annual meeting of shareholders or until his successor is elected and qualified is: Charles J. Bayer, 3240 E. Pershing, Phoenix, Az. 85032 ARTICLE VI The name and address of the incorporator is: J. Scott Askew, 2721 N. Central Avenue, Phoenix, Az. 85004 ARTICLE VII The period of existence of the corporation shall be: Perpetual IN WITNESS WHEREOF, I the aforementioned incorporator have signed the Articles of Incorporation this 2nd day of December, 1994. /s/ J. Scott Askew ----------------------------- J. Scott Askew, Incorporator STATE OF ARIZONA COUNTY OF MARICOPA THIS IS TO CERTIFY that on the 2nd day of December, 1994, before me, a Notary Public, personally appeared J. Scott Askew, who I am satisfied is the person named in and who executed the foregoing Articles of Incorporation and I first having made known to him the contents thereof, did acknowledge that he had signed the same as his voluntary act and deed for the uses and purposes therein expressed. IN TESTIMONY WHEREOF, I have hereunto set my hand and affixed my official seal this 2nd day of December, 1994. (NOTARIAL SEAL) /s/ Blanche I. Passolt ---------------------------- Blanche I. Passolt NOTARY PUBLIC Page: 1 Document Name: untitled NAME: TWO PAC COMPANY FILE TYP/NR C 18996-1994 ST NEVADA INC ON DEC 6, 1994 FOR PERPETUAL STATUS: CURRENT LIST AS OF : 12-06-02 NUMBER OF PAGES FILED: 3 PME TYPE: REGULAR PURPOSE: ALL LEGAL ACTIVITIES CAPITAL: $1,000 PAR SHRS: 100,000 PAR VAL: $.010 NR NO PAR SHRS: RA NBR: 5482 LIST OF OFFICERS FOR 02 - 03 FILED ON 12-06-02 ANNUAL LO MLJ RA CORPORATION TRUST COMPANY OF NEVADA STE 500 ACCEPTED 120694 6100 NEIL ROAD RENO NV 89511 PRES CARLOS VIZCARRA P.O. BOX 21502 122794 2727 N. CENTRAL PHOENIX AZ 85004 SECT JENNIFER M STETTLES P.O. BOX 21502 122794 2727 N. CENTRAL PHOENIX AZ 85004 TRES DONALD WM. MURNEY P.O. BOX 21502 122794 2727 N. CENTRAL PHOENIX AZ 85004 MORE OFFICERS ON LIST CMD? PA1=MENU PF3=PAGE-> PF2=NEXT CORP PF5=END INQ PF7=LOOKUP