William C. Vassell

Prosegur Services Group, Inc. provides full-solution security services. It offers general security and aviation services which includes commercial, finance, hospitality, security solutions and patrol services. The company was founded in 1980 and is headquartered in Herndon, VA.

Martin & Co. engages in rental, leasing and property management business. It issues various certifications, standards, and guidelines for the security profession. The company was founded in 1955 and is headquartered in Alexandria, VA.

National Association of Security Cos. operates as a contract security association. It provides information to members, associations, security industry leaders and the media on a broad range of public policy and private security industry issues. The company is headquartered in Washington, DC.

Murdoch Security & Investigations, Inc. provides security and investigation services. It offers a range of security services, investigations, executive protection to individuals and businesses including jewelry, apparel retailers, financial institutions, residential and commercial real estate management. The company was founded in 1994 and is headquartered in Stamford, CT.

Associated Licensed Detectives of New York State provides investigation and security services. The company was founded in 1950 and is headquartered in Albany, NY.