David N. Fitzgerald

McGuire Real Estate provides real estate services and online information on luxury homes. The company was founded in 1919 and is headquartered in San Francisco, CA.

Potomac KnowledgeWay catalyst, thought leader and idea incubator to help the Greater Washington region to be a global leader in advanced telecommunications, content, and Internet-related industries, and the new opportunities their convergence is creating in the region. The company is headquartered in Herndon, VA.

Tri-C Resources LLC provides oil and gas exploration services. It engages in the exploration, development, and acquisition of domestic and foreign energy properties. The company was founded by Michael M. Cone, Michael Scott C one, and John U. Clinch in June 1985 and is headquartered in Houston, TX.

Part of Occidental Petroleum Corp., Placid Oil Co. is a company that deals with fuel oil and oil & gas production. The company is based in Dallas, TX. Placid Oil was acquired by Occidental Petroleum Corp. on December 30, 1994 for $250 million.

Buttes Gas & Oil Co. is a Canadian company that specializes in drilling oil and gas wells.

Crescent Petroleum Co. International Ltd. engages in petroleum and natural gas production activities. The firm offers exploration and development of petroleum concessions and the production and sale of crude oil, petroleum products and natural gas. The company was founded by Hamid Jafar in 1971 and is headquartered in Sharjah, the United Arab Emirates.

Part of GS Holdings Corp., Tiger Oil Corp. sells oil products and provides oil exploration services.