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

CACI Awarded $50 Million Prime Contract to Support U.S. Army RDECOM CERDEC Night Vision and Electronic Sensors Directorate

Continuing Work Helps Enhance Warfighter Acquisition Capabilities Under Adverse Conditions

Arlington, VA, September 9, 2009 - CACI International Inc (NYSE:CACI) announced today that it has been awarded a $50 million prime contract to support the Infrared Focal Plane Array (FPA) Technology (IFT) branch of the U.S. Army's Research Development and Engineering Command (RDECOM) Communications-Electronics Research Development and Engineering Center (CERDEC) Night Vision and Electronic Sensors Directorate (NVESD). CACI received the three-year award (one base year and two option years) under its Strategic Services Sourcing (S3) contract with the Army. This new award increases both the size and scope of CACI's work with NVESD and strengthens CACI's functional core competency in C4ISR (command, control, communications, computers, intelligence, surveillance, and reconnaissance).

NVESD provides the Army with research and development of advanced night vision and other sensor technologies, such as infrared weapon sights, surveillance systems, and systems that enhance the soldier's ability to operate at night and during limited visibility conditions. CACI brings extensive technical and management expertise to support the IFT branch mission, with ongoing work first initiated in 2003.

With this contract, CACI will help advance NVESD's infrared focal plane technology to enhance warfighter target acquisition and identification capabilities, which will help service members on land, at sea, and in the air to see better in all day and night environmental conditions. The company also provides technical support to NVESD for concept development, systems development, and systems integration and testing. In continuing its NVESD support role, CACI ensures uninterrupted services delivered by a team with in-depth knowledge of, and familiarity with, NVESD's technical and mission requirements.

According to Bill Fairl, President of U.S. Operations, "We are very pleased with this award as it demonstrates Night Vision and Electronic Sensors Directorate's sustained confidence in CACI's ability to strategically assemble proven teams to develop essential technology. This contract provides the opportunity to continue to grow a part of our business with which we have had long-term success."

CACI President and CEO Paul Cofoni said, "Helping warfighters perform their missions at peak efficiency is always a top priority in countering global terrorism. We're thankful that this continuing work with the NVESD under the Army's Strategic Services Sourcing contract helps advance that critical objective while meshing so precisely with CACI's core business structure."

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