At the time of his retirement, Mr. Paterson served as the global leader of PwC's Consumer, Industrial Products and Services Practices comprising the automotive, consumer and retail, energy utilities and mining, industrial products, pharmaceutical and health industry sectors. These practices comprised roughly half of PwC's global revenues. Mr. Paterson also served as managing partner of PwC's Houston Office and U.S. Energy Practice. As part of this role, Mr. Paterson oversaw the audits of ExxonMobil Corporation from 2002 to 2006. Previous to this position, Mr. Paterson lived in Moscow, Russia where he led PwC's Energy Practice for Europe, Middle East and Asia and also managed the audit processes of OAO Gazprom. Mr. Paterson joined PwC in 1974 and was admitted as a partner in 1987.