Gun S. Shim

Pacific Gas & Electric Co. engages in the provision of natural gas and electric services. It owns and operates an integrated natural gas transportation, storage, and distribution system in California and also offers backbone gas transmission, gas delivery, and gas storage services as separate and distinct services. The firm also offers gas supply and gathering facilities. The company was founded in 1905 and is headquartered in Oakland, CA.

SBC Communications, Inc. provides telecommunications services primarily in the United States. It offers various services and products, such as local exchange services, wireless communications, long-distance services, Internet services, telecommunications equipment, and directory advertising and publishing services. The company provides landline telecommunications services, such as local, long-distance voice, switched access, data and messaging services, and satellite television services; mobile wireless voice and data communications services; and directory services, such as advertising, Yellow and White Pages directories, and electronic directory publishing

T-Mobile USA, Inc. engages in the provision of wireless voice, messaging, and data services. It offers different plans for phones and tablets. The company was founded by John W. Stanton in 1994 and is headquartered in Bellevue, WA.