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| OTHER SUPPLIERS |
| | Seger Consulting Group | | Providers of Consulting, Training, and Products to Utilities | | |
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| | SembCorp Utilities (UK) Limited | | Specializes in Security Services | | |
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| | Sentryx | | Specialists in Disaster Recovery and Business Continuity Training Courses, Workshops, and Seminars | | |
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| | SERCO | | Specializes in Building and Construction Services | | |
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| | Seventrees Corporation | | Provider of Special Security and Corporate Intelligence and Investigation Services | | |
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| | Silverseal Corporation | | Providers of Security Solutions | | |
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| | Spec Rescue International | | Specializes In Up-To-Date, Cutting Edge Training and Consultation Services | | |
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| | Spillman Technologies, Inc. | | Leading Provider of Public Safety Software, Training, Support, and Services | | |
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| | Spiramid Inc. | | Specialists In Software And Technology | | |
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| | Spirent Federal Systems | | Specializes in the Development of Test Solutions for Mission-Critical Equipment | | |
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| | SRA International, Inc. | | Leading Provider of Technology and Strategic Consulting Services and Solutions | | |
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| | SRI International | | Specializes in Client-Sponsored Research and Development for Government Agencies, Commercial Businesses, Foundations, and Other Organization | | |
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| | St. James Security Ltd | | Specializes in Security Management, Manpower and Ancillary Services | | |
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| | Staynor Response Services Ltd. | | Providers of Emergency Response Service Solutions | | |
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| | Steven R. Keller & Associates | | Providers of Security Consulting Services | | |
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| | Strategic Options Inc. | | Leader in the Security Arena, Providing International Services To Multi-National Companies and Government Entities | | |
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| | Strategic Technology Group | | Specializes in Security Design and Management Consulting Services | | |
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| | Tacilent Corporation | | Specializes in Emergency Resource Planning and Management | | |
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| | Van Zandt Associates | | International Threat and Risk Assessment Group, Specializing in Behavioral and Forensic Analysis | | |
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| | Vernon Software Systems, Inc. | | Provider of Computers and Software for First Responder Organizations | | |
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