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

CACI International to Release 4^th Quarter and Full Year FY10 Earnings After Market Close on August 17, 2010

To Hold Conference Call and Webcast Before Market Open on August 18, 2010

Arlington, VA, July 15, 2010 - CACI International Inc (NYSE:CACI) will announce its fourth quarter and full year FY10 results at 4:05 PM Eastern Time on Tuesday, August 17, 2010. Following the release of this information, we have scheduled a conference call for Wednesday, August 18, 2010 at 8:30 AM Eastern Time, during which members of our senior management team will be making a brief presentation focusing on fourth quarter and full year results and operating trends. A question-and-answer session will follow to further discuss our results and our future performance expectations.

You can listen to the conference call and view accompanying exhibits over the Internet by logging on to CACI's Internet site at www.caci.com at the scheduled time. You may also dial in to 1-877-303-9143, confirmation code 87216709. Slides of the presentation will be available on our website during the call. A replay of the call will also be available over the Internet, and can be accessed through CACI's website (www.caci.com).

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 13,100 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.

# # #