ManTech Defense Systems Group has a staff of more than 2,300 professionals. It has a facility of over 40,000 square feet that features a full-service warehouse and sensitive-compartmented information facility of more than 1,400 square feet. The company s subsidiaries include ManTech Telecommunications and Information Systems Corporation and ManTech Systems Engineering Corporation. ManTech Defense Systems Group is a part of ManTech International Corporation, which is one of the leading providers of innovative technologies and solutions for national security programs in the United States. The parent company specializes in systems engineering and integration, software development, enterprise architecture, cyber security, information assurance, intelligence operations and analysis support. In addition, ManTech Defense Systems Group specializes in network and critical infrastructure protection, information operations and warfare support, communication integration, logistics, supply chain management and service-oriented architectures.