EXHIBIT 24 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose name appears below constitutes and appoints Robert B. Terry and Terry M. Campbell, and each of them, his true and lawful attorney-in-fact and agent with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement, as well as any related registration statement (or amendments thereto) filed pursuant to Rule 462(b) promulgated under the Securities Act of 1933, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. This Power of Attorney may be executed in multiple counterparts, each of which shall be deemed an original, but which taken together shall constitute one instrument. PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE CAPACITIES AND ON THE DATES INDICTED. Signature Title Date Chairman of Board December 9, 1999 Albert J. Shivley and Director Vice Chairman of Board December 9, 1999 Jody Bezner and Director Director December 9, 1999 Lyman L. Adams, Jr. Director December 9, 1999 Ronald J. Amundson Director December 9, 1999 Baxter Ankerstjerne Director December 9, 1999 Richard L. Detten Director December 9, 1999 Steven Erdman Director December 9, 1999 Harry Fehrenbacher Director December 9, 1999 Martie Floyd Director December 9, 1999 Warren Gerdes Director December 9, 1999 Thomas H. Gist Director December 9, 1999 Ben Griffith Director December 9, 1999 Gail D. Hall Director December 9, 1999 Barry Jensen Director December 9, 1999 Ron Jurgens Director December 9, 1999 William F. Kuhlman Director December 9, 1999 Greg Pfenning Director December 9, 1999 Monte Romohr Director December 9, 1999 Joe Royster Director December 9, 1999 E. Kent Stamper Director December 9, 1999 Eli F. Vaughn Director December 9, 1999 Frank Wilson