FORM 10-K

79 Pursuant to the requirements of the Securities Exchange Act of 1934, this Annual Report on Form 10-K has been signed below on this 15th day of February 2018 by the following persons on behalf of the registrant and in the capacities indicated: Name Title /s/ Scott C. Donnelly Scott C. Donnelly Chairman, President and Chief Executive Officer (principal executive officer) * Kathleen M. Bader Director * R. Kerry Clark Director * James T. Conway Director * Ivor J. Evans Director * Lawrence K. Fish Director * Paul E. Gagné Director * Ralph D. Heath Director * Deborah Lee James Director * Lloyd G. Trotter Director * James L. Ziemer Director * Maria T. Zuber Director /s/ Frank T. Connor Frank T. Connor Executive Vice President and Chief Financial Officer (principal financial officer) /s/ Mark S. Bamford Mark S. Bamford Vice President and Corporate Controller (principal accounting officer) *By: /s/ Jayne M. Donegan Jayne M. Donegan, Attorney-in-fact