Committee Composition

	Executive Committee	Nominating Committee	Compensation Committee	Audit Committee
J. Tyler Haahr	Executive Committee
Douglas J. Hajek		Nominating Committee	Compensation Committee
Brad Hanson	Executive Committee
Glen Herrick	Executive Committee
Elizabeth G. Hoople		Nominating Committee	Compensation Committee	Audit Committee
Frederick V. Moore		Nominating Committee	Compensation Committee	Audit Committee
Becky S. Shulman		Nominating Committee	Compensation Committee	Audit Committee
Kendall E. Stork		Nominating Committee	Compensation Committee	Audit Committee

= Chairperson = Member = Chairman of the Board = Vice-Chair of the Board = Lead Director