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AlliedBarton was founded as Allied Security in 1957 in Pittsburgh, Pennsylvania as a provider of contracted security guards and related services. [9]In 2004, Allied Security acquired Malden, Massachusetts-based Security Systems Inc. (SSI) and Atlanta, Georgia-based Barton Protective Services to form AlliedBarton Security Services - creating the largest American-owned contract security services ...
AlliedBarton was a Conshohocken, Pennsylvania-based security firm. The company was founded in 1957 as Allied Security, and in 2016 was merged with Santa Ana, California-based security and janitorial services company Universal Services of America to form Allied Universal. [1] [2]
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Universal Protection Service was founded in 1965. [2] It started as a janitorial company and expanded into security by 1969. After acquiring the security business, the company was divided into four different divisions, under parent Universal Services, to reflect the company's overall business. [3] [4] [citation needed]
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Allied Universal: 800,000 [5] 4: ... hosting and related services: 498,800 Web search ... Travel arrangement and reservation services: 194,400 Investigation and ...
G4S Secure Solutions (USA) is an American/British-based security services company, and a subsidiary of G4S plc.It was founded as The Wackenhut Corporation in 1954, in Coral Gables, Florida, by George Wackenhut and three partners (all former FBI agents).
Fortune 500 companies based in Houston [1]: Rank Company name 12: ExxonMobil: 48: Phillips 66: 60: Sysco: 105: Enterprise Products Partners: 106: Hewlett Packard Enterprise: 127: Plains GP Holdings