News Release CACI International Inc · 1100 North Glebe Road · Arlington Virginia 22201

CACI Awarded $48 Million Knowledge Management Task Order With Securities and Exchange Commission

Company to Provide Electronic Document Discovery and Computer Forensics Support

Arlington, VA, September 25, 2007 - CACI International Inc (NYSE:CAI) announced today that it has been awarded an estimated $48 million task order, for one base year and four option years, to provide electronic document discovery (EDD) and computer forensics solutions to the Securities and Exchange Commission (SEC), Division of Enforcement. The competitive award was made by the General Services Administration's Federal Systems Integration and Management Center (FEDSIM) under the Millennia Lite contract vehicle. The contract increases the size and scope of EDD services the company has been providing to the SEC on other contracts and expands CACI's role to the new area of forensics. The award supports CACI's knowledge management area of business.

As the SEC enforces regulations governing the securities industry, CACI's EDD solutions help the SEC convert electronic documents into formats that SEC attorneys can use to prepare their legal cases. CACI's computer forensics services provide the specialized tools and expertise necessary to systematically inspect a computer system and its contents for evidence, while also preserving the integrity of the original data. Computer forensics generally requires capabilities beyond normal data collection and preservation.

CACI, as one of the nation's premiere providers of litigation support services, has the demonstrated resources and expertise to convert large volumes of electronic material into required formats, effectively and on time. The company offers substantial expertise in electronically processing documents, creating litigation support databases and securely uploading files and records. Moreover, CACI has begun building a forensics practice to meet the growing demand for computer forensics support, and will provide the SEC with training and related services in this area as the agency pursues accreditation for its forensics laboratory.

According to Bill Fairl, CACI's President of U.S. Operations, "CACI offers the Securities and Exchange Commission proven solutions in electronic document discovery and forensics. We bring considerable expertise in converting data into formats the SEC can use to win cases and enforce the law."

CACI President and CEO Paul Cofoni said, "This award broadens the knowledge management services and solutions CACI delivers to the Securities and Exchange Commission and other law enforcement clients. It also provides a significant opportunity for CACI to develop a substantial forensics capability that we can offer to other clients in the law enforcement community. CACI is dedicated to providing innovative solutions for our clients' important missions."

CACI International Inc provides the IT and network solutions needed to prevail in today's new era of national security, intelligence, and e-government. From systems integration and managed network solutions to knowledge management, engineering, simulation, and information assurance, we deliver the IT applications and infrastructures our federal customers use to improve communications and collaboration, secure the integrity of information systems and networks, enhance data collection and analysis, and increase efficiency and mission effectiveness. Our solutions lead the transformation of national security and intelligence, assure homeland security, enhance decision-making, and help government to work smarter, faster, and more responsively. CACI is a member of the Fortune 1000 Largest Companies of 2007 and the Russell 2000 index. CACI provides dynamic careers for more than 10,600 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; 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 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, and (iii) competition for task orders under Government Wide Acquisition Contracts ("GWACs") and/or schedule contracts with the General Services Administration; 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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