News Release
CACI International Inc ˇ 1100 North Glebe Road ˇ Arlington Virginia 22201
www.caci.com

CACI Awarded $29 Million Information Technology Task Order With U.S. State Department's Bureau of Diplomatic Security

Company to Provide Support for Real-time Services for the Operation, Maintenance, and Development of IT Systems

Arlington, VA, December 2, 2008 - CACI International Inc (NYSE:CAI) announced today that it has been awarded a $29 million prime task order to continue its support for the Department of State Bureau of Diplomatic Security Chief Technology Officer. The task order, which has a duration of one base year, two one-year options, and one eight-month option, was awarded to CACI under the the Department of State (DoS) Security Assurance Services and Innovation (SASI) blanket purchase agreement, which has a ceiling value of $710 million. The award increases the size and scope of CACI's work in its core competencies of business system solutions, program management and SETA support services, and enterprise IT and network services.

The Bureau of Diplomatic Security is the security and law enforcement arm of the U.S. Department of State. The Bureau is a world leader in international investigations, threat analysis, cyber security, counterterrorism, security technology, and protection of people, property, and information. The task order provides real-time services for the operation, maintenance, and development of IT systems that enable the Bureau to conduct DoS security and law enforcement missions.

With the ongoing work awarded by this task order, DoS benefits from CACI's broad knowledge base of the agency's vital mission and history, as well as established business processes and repeatable methodologies. These best practices applications are embodied by the company's wide use of CMMIŽ, an industry model for excellence in software development, and ISOŽ 20000, which provides a benchmark to assess performance and improvement.

According to Bill Fairl, CACI's President of U.S. Operations, "The Bureau of Diplomatic Security prime task order award to CACI clearly demonstrates the State Department's continued confidence in our ability to help the Bureau carry out its vitally important tasks. We offer the Bureau proven IT and program management expertise based on a wealth of experience in its specific environment and throughout the government."

CACI President and CEO Paul Cofoni said, "CACI's selection to continue to support the Bureau of Diplomatic Security further positions our company in providing technology tools that help the Bureau's professionals keep our diplomats safe and secure while serving our country abroad. It's a dynamic example of that CACI continuing support of our nation's critically important missions worldwide, as well as within our borders."

CACI International Inc provides the professional services and IT solutions needed to prevail in today's defense, intelligence, homeland security, and federal civilian government arenas. We deliver enterprise IT and network services; data, information, and knowledge management services; business system solutions; logistics and material readiness; C4ISR Solutions; cyber solutions; integrated security and intelligence solutions; and program management and SETA support services. CACI services and solutions help our federal clients provide for national security, improve communications and collaboration, secure the integrity of information systems and networks, enhance data collection and analysis, and increase efficiency and mission effectiveness. We add value to our clients' operations, increase their skills and capabilities, and enhance their missions. CACI is a member of the Fortune 1000 Largest Companies of 2007 and the Russell 2000 index. CACI provides dynamic careers for approximately 12,400 employees working in over 120 offices in the U.S. and Europe. CACI is the IT provider for a networked world. Visit CACI on the web at www.caci.com.

There are statements made herein which do not address historical facts, and therefore could be interpreted to be forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such statements are subject to factors that could cause actual results to differ materially from anticipated results. The factors that could cause actual results to differ materially from those anticipated include, but are not limited to, the following: regional and national economic conditions in the United States and the United Kingdom, including conditions that result from terrorist activities or war; changes in interest rates; currency fluctuations; failure to achieve contract awards in connection with recompetes for present business and/or competition for new business; the risks and uncertainties associated with client interest in and purchases of new products and/or services; continued funding of U.S. government or other public sector projects, based on a change in spending patterns, or in the event of a priority need for funds, such as homeland security, the war on terrorism or rebuilding Iraq; government contract procurement (such as bid protest, small business set asides, etc.) and termination risks; the results of government investigations into allegations of improper actions related to the provision of services in support of U.S. military operations in Iraq; individual business decisions of our clients; paradigm shifts in technology; competitive factors such as pricing pressures and/or competition to hire and retain employees (particularly those with security clearances); material changes in laws or regulations applicable to our businesses, particularly in connection with (i) government contracts for services, (ii) outsourcing of activities that have been performed by the government, (iii) competition for task orders under Government Wide Acquisition Contracts ("GWACs") and/or schedule contracts with the General Services Administration; and (iv) accounting for convertible debt instruments; our own ability to achieve the objectives of near term or long range business plans; and other risks described in the company's Securities and Exchange Commission filings.

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Corporate Communications and Media:

Jody Brown, Executive Vice President, Public Relations

(703) 841-7801, jbrown@caci.com

Investor Relations:

David Dragics, Senior Vice President, Investor Relations

(866) 606-3471, ddragics@caci.com


CMMI is a registered trademark of Carnegie Mellon University

ISO is a registered trademark of the International Organization for Standardization