EXHIBIT 25 POWER OF ATTORNEY POWER OF ATTORNEY Each person whose signature appears below hereby authorizes Terry L. Robinson or David B. Gaw and either of them, as attorney-in-fact, to sign in his or her behalf, individually and in each capacity stated below, and to file this Annual Report on Form 10- K and all amendments and/or supplements to this Annual Report on Form 10- K Signature Title Date - --------- ----- ---- Director - ------------------------- Lauren A. Ackerman Director - ------------------------- John B. Anthony, III /s/Thomas N. Gavin Director March 15, 2006 - ------------------------- Thomas N. Gavin /s/David B. Gaw Director and March 15, 2006 - ------------------------- Chairman of the Board David B. Gaw /s/Fred J. Hearn Jr. Director March 15, 2006 - ------------------------- Fred J. Hearn Jr. /s/Conrad W. Hewitt Director March 15, 2006 - ------------------------- Conrad W. Hewitt Director - ------------------------- Connie L. Klimisch /s/Richard S. Long Director and March 15, 2006 - ------------------------- Vice Chairman of the Board Richard S. Long Director - ------------------------- Thomas H. Lowenstein /s/Thomas F. Malloy Director March 15, 2006 - ------------------------- Thomas F. Malloy Director - ------------------------- Andrew J. Nicks M.D. /s/Terry L. Robinson President, Chief March 15, 2006 - ------------------------- Executive Officer and Director Terry L. Robinson (Principal Executive Officer) /s/Thomas H. Shelton Director March 15, 2006 - ------------------------- Thomas H. Shelton . /s/Stephen C. Spencer Director March 15, 2006 - ------------------------- Stephen C. Spencer /s/Denise C. Suihkonen Director March 15, 2006 - ------------------------- Denise C. Suihkonen /s/James E. Tidgewell Director March 15, 2006 - ------------------------- James E. Tidgewell /s/Patrick E. Phelan Executive Vice President March 15, 2006 - ------------------------- Chief Financial Officer Patrick E. Phelan (Principal Financial Officer)