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

CACI Awarded Prime Contract on $94 Million Program to Support Homeland Security Infrastructure Protection Initiatives

New Work Provides Full Array of Program Management Expertise for Duty Desk and Watch Desk Activities and Operation Support Services

Arlington, VA, July 29, 2009 - CACI International Inc (NYSE:CACI) announced today it has been awarded a prime, indefinite delivery/indefinite quantity contract with a ceiling value of $94 million along with an initial task order award of $14.2 million. CACI is one of two companies awarded the five-year (one base year with four one-year options) contract by the National Protection and Program Directorate (NPPD) of the Department of Homeland Security (DHS). The new work supports national infrastructure protection through duty desk, watch desk, and operation support services for the directorate. It expands CACI's presence in the DHS with wide-ranging mission support.

NPPD is charged with advancing the risk-reduction mission of the DHS with an integrated approach that provides timely and effective responses to both natural disasters and threats caused by human elements. With this award, CACI will provide highly experienced personnel, around-the-clock, to support the NPPD through management of duty desk and watch desk operations. The CACI team will enhance communications by managing, processing, and coordinating the flow of information across the DHS and with Protective Security Advisors (PSAs) in the field.

Under this first task order, CACI's support includes duty desk operations involving coordination with state and local groups throughout the nation. Future support may include watch desk responsibilities monitoring events ranging from natural disasters to possible terrorist incidents. Operation support services may encompass everything from generating reports and formulating briefing materials to the analysis of national training exercises for DHS, state, and local government personnel.

This program expands CACI's support of critical infrastructure protection which also includes the Automated Critical Asset Management System (ACAMS) program. ACAMS is a CACI-maintained solution established to increase and broaden information sharing between critical infrastructure owners and the federal government.

Bill Fairl, CACI's President of U.S. Operations, said, "CACI is very pleased that this award from the National Protection and Program Directorate of the DHS enables us to help the Department achieve increased efficiencies through the integrated support we provide. We understand all the tools needed to enhance situational awareness, and with the ACAMS program we're able to add a powerful new solution to the mix."

CACI President and CEO Paul Cofoni said, "Since we were selected as a prime on the Enterprise Acquisition Gateway for Leading Edge Solutions (EAGLE) program of the DHS in 2006, we have been at the forefront of providing the agency with information technology support services. Now this new work with the NPPD enables us to also deliver the mission support so vital to keeping our nation safe against both natural and man-made threats."

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 12,400 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 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