POWERS OF ATTORNEY
Each person whose signature appears below constitutes and appoints James G. Hnat, Eileen McCarthy and Brandon Nelson, acting severally, as his or her attorney-in-fact and agent, to sign the automatic shelf registration statement on form S-3ARS filed herewith and any or all amendments (including post-effective amendments) to such registration statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting to said attorney-in-fact and agent full power and authority to perform any act in connection with any of the foregoing as fully to all intents and purposes as he or she might do in person, hereby ratifying and confirming all that said attorney-in-fact and agent may lawfully do or cause to be done by virtue hereof. Each attorney-in-fact and agent is hereby granted full power of substitution and revocation with respect hereto.
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| Signature | Title | Date |
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/s/ David Barger David Barger | Chief Executive Officer, President and Director (Principal Executive Officer) | October 30, 2012 |
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/s/ Mark D. Powers Mark Powers | Chief Financial Officer (Principal Financial Officer) | October 30, 2012 |
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/s/ Donald Daniels Donald Daniels | Vice President, Controller and Chief Accounting Officer (Principal Accounting Officer) | October 30, 2012 |
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/s/ Jens Bischof Jens Bischof | Director | October 30, 2012 |
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/s/ Peter Boneparth Peter Boneparth | Director | October 30, 2012 |
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/s/ Virginia Gambale Virginia Gambale | Director | October 30, 2012 |
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/s/ Ellen Jewett Ellen Jewett | Director | October 30, 2012 |
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/s/ Stanley McChrysal Stanley McChrystal | Director | October 30, 2012 |
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/s/ Joel Peterson Joel Peterson | Director | October 30, 2012 |
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/s/ Ann Rhoades Ann Rhoades | Director | October 30, 2012 |
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/s/ Frank Sica Frank Sica | Director | October 30, 2012 |
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