Charles R. Brown

TVA Fire & Life Safety, Inc. provides fire protection services. Its services include life safety, security, project engineering & design, code compliance & research, risk management, and loss control. The company was founded by William J. Tomes in 1986 and is headquartered in San Diego, CA.

Ameritech Corp. provided telecommunications services in the United States. Its Bell Group provided exchange telecommunications, local and long-distance exchange access services for business and residential customers in the Midwest was made up of Illinois Bell, Indiana Bell, Michigan Bell, Ohio Bell and Wisconsin Bell. The company was headquartered in Chicago, IL.

Part of ADT, Inc., SecurityLink is a company that provides advanced telecommunications services. The company is based in Chicago, IL. The company was founded by Michael T. Shaw. SecurityLink was acquired by Cambridge Protection Industries LLC, a subsidiary of ADT, Inc., from SBC Communications, Inc. on January 31, 2001.