Deloitte announced the appointment of Amy Chronis as a vice chairman of Deloitte LLP and leader of its oil, gas and chemicals (OG&C) sector within the U.S. energy, resources and industrials industry. Chronis will lead the overall strategic direction and market eminence of the OG&C practice, as well as the go-to-market strategies for Deloitte’s key businesses including audit & assurance, consulting, tax and risk & financial advisory services.