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

CACI Awarded $40 Million Contract to Continue Support for Library of Congress Digital Content Management and Delivery

Arlington, VA, August 31, 2010 - CACI International Inc (NYSE:CACI) announced today that it has been awarded a $40 million prime contract to continue providing content management and delivery support for the Library of Congress. The contract, for one base year and four option years, was awarded under the General Services Administration's Information Technology Schedule.

CACI's support includes providing technical expertise in content management and delivery services, as well as web application development. These technical services enable the public to access many of the Library's collections online. CACI has helped the Library develop digital archiving tools and techniques, including large-scale automation tools and standardized processes for end-to-end support of digital content. CACI's project management support has assisted the Library in meeting many of its digital archiving, preservation, conversion, and content management goals.

Founded in 1800, the Library of Congress is the nation's oldest federal cultural institution. The Library seeks to spark imagination and creativity and to further human understanding and wisdom by providing access to knowledge through its magnificent collections, programs and exhibitions. Many of the Library's rich resources can be accessed through its website at www.loc.gov and via interactive exhibitions on a personalized website at myLOC.gov.

According to Bill Fairl, CACI's President of U.S. Operations, "CACI offers leading-edge solutions for preserving and making Library of Congress archives available to the public. Leveraging the capabilities of both proprietary and open source tools, our subject matter experts provide scalable solutions for multiple requirements, supporting the Library by staying agile in our capabilities and alert to emerging technologies."

CACI President and CEO Paul Cofoni said, "CACI is helping the Library of Congress protect our nation's heritage with groundbreaking solutions for information management and retrieval. Moreover, for federal agencies that seek to modernize systems and enhance efficiency, CACI innovations in data and knowledge management, and all our core capabilities, provide enterprise-wide value that helps meet mission goals and serve American taxpayers."

CACI provides professional services and IT solutions needed to prevail in the 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. CACI is a member of the Fortune 1000 Largest Companies and the Russell 2000 index. CACI provides dynamic careers for approximately 13,200 employees working in over 120 offices in the U.S. and Europe. 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 government 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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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