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

The Wexford Group International, a CACI Company, Awarded Prime Position on $494 Million, Multiple-Award Contract to Support Joint Improvised Explosive Device Defeat Organization

Ongoing Work Expands Capabilities in Integrated Security and Intelligence Solutions

Arlington, VA, August 27, 2009 – The Wexford Group International, a wholly owned company of CACI International Inc (NYSE: CACI), announced today that the company has been awarded a five-year prime contract to continue its support for the Joint Improvised Explosive Device Defeat Organization (JIEDDO). This is one of five awards for this indefinite delivery/indefinite quantity contract, which has a ceiling value of approximately $494 million. The contract expands the company's existing business with JIEDDO and enhances CACI's position as one of the premier counter-IED companies in the world. The award strengthens CACI's functional core competency in integrated security and intelligence solutions and leverages Wexford as a centerpiece of that core competency.

JIEDDO leads the Department of Defense efforts in countering improvised explosive devices (IEDs), via a three-pronged strategy for defeating IEDs: attack the network, defeat the device, and train the force. JIEDDO integrates DoD's efforts with all Combatant Commands, the Armed Services, the Intelligence Community, interagency organizations, and public, private and international partners.

With this contract, CACI-Wexford, Inc. will support JIEDDO with strategic planning, operational and training support, intelligence analysis, program management support, and strategic communications. The company's ability to deliver expert training, assessment, and analysis helps assure mission goals are met successfully, effectively, and on time. Wexford has been working with JIEDDO and its predecessors since November 2003.

Bill Fairl, CACI President of U.S. Operations, said "This work with the Joint Improvised Explosive Device Defeat Organization offers CACI an exceptional opportunity to continue our significant support for this critically important Department of Defense organization. We're extremely proud of our employees who help JIEDDO accomplish its mission of defeating threats to our nation's service members serving in harm's way."

According to Paul Cofoni, CACI President and Chief Executive Officer, "We are very pleased that the Wexford Group International can, once again, make a vital contribution to helping JIEDDO safeguard our warfighters. This is a significant contract that further solidifies CACI's government partnership through which we provide high-quality, leading edge services in support of the nation's defense."

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 and the Russell 2000 index. CACI provides dynamic careers for approximately 12,500 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 and www.asymmetricthreat.net.

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 a prolonged recession; terrorist activities or war; changes in interest rates; currency fluctuations; significant fluctuations in the equity markets; 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; or an economic stimulus package; government contract procurement (such as bid protest, small business set asides, loss of work due to organizational conflicts of interest, 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; the results of government audit and reviews conducted by the Defense Contract Audit Agency or other governmental entities with cognizant oversight; 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); market speculation regarding our continued independence; 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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For investor information contact:

David Dragics
Senior Vice President, Investor Relations
(866) 606-3471
ddragics@caci.com

For other information contact:

Jody Brown
Executive Vice President, Public Relations
(703) 841-7801
jbrown@caci.com