Mainstay Enterprises specializes in Information, Automation, Personnel and Physical Security Services. One of Mainstay's Core Competencies is providing DITSCAP/DIACAP/NIACAP and NIST-based Information Assurance (IA) services to Clients such as: the Federal Aviation Administration, the Federal Highway Administration, the Volpe National Transportation Center, the Veterans Health Administration, the United States Coast Guard, the Food & Drug Administration, Department of Transportation, Department of the Army, Department of the Air Force, the Centers for Disease Control and Prevention, the Treasury Department, Health and Human Services/HRSA and the EPA.

Mainstay provides a wide variety of Security Services relating to protecting the confidentiality, integrity and availability of Enterprise Assets. Our Focus includes both the public and private sectors, and our expertise covers the spectrum of security and audit disciplines, ranging from National Security through Economic and Personal Security. Our unique systems approach completely integrates all four security disciplines, --- Physical, Personnel, Information and Automation Security, --- into the overall Enterprise Infrastructure. This seamless integration results in the ability of our Clients to effectively meet their primary enterprise goals and objectives, while simultaneously fulfilling the security needs of their own clients, employees and stakeholders.

Mainstay has been performing C&A for Federal Clients since 1998. These Clients are shown in the following table, together with the C&A Methodology employed in each case.

CLIENT	METHODOLOGY	COMMENTS
Federal Aviation Administration	SCAP	NIST-based Methodology
Federal Highway Administration	NIST
DOT OCIO	NIST	800-26 based Methodology
Volpe National Transportation Ctr	NIST	800-26 based Methodology
Department of Treasury	NIST	800-53a based Methodology
U.S. Coast Guard	DITSCAP	Level 3
FAA/DISA	AFSSI-5024	USAF version of DITSCAP
USACECOM	DITSCAP	Level 3
Centers for Disease Control & Prevention	NIST
Veterans Health Administration	NIST/NIACAP Hybrid
Nuclear Regulatory Commission	NIST
Department of Labor	NIST
Food & Drug Administration	NIST
Army Corps of Engineers	AR 380-19	Pre-DITSCAP
Army Museum	DITSCAP	Level 3
HHS/HRSA	NIST	800-53a based Methodology