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American Commercial Security Services (ACSS) is a subsidiary of ABM Industries, a large facility service contractor that provides janitorial, parking, engineering, security, lighting and mechanical services for thousands of commercial, industrial, institutional and retail facilities. Headquartered in Houston, Texas, the company provides professional contract security services for high-rise buildings, high-tech computer campuses and complexes, financial institutions, data center facilities, commercial and industrial sites. ACSS provides security professionals for a growing number of Fortune 500 corporations, from more than 30 branch offices throughout the United States. ACSS has branch operations in Arizona, California, Colorado, Illinois, Louisiana, Minnesota, North Carolina, North Dakota, New York, New Jersey, Oregon, Pennsylvania, Texas, Utah and Washington.

Humphreys National Security Company

Armed Security and Defense Contracting Services

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