GTCR Completes Sale of Six3 Systems to CACI

  GTCR Completes Sale of Six3 Systems to CACI

Deal Reinforces Value of GTCR's Leaders Strategy™

Business Wire

CHICAGO -- November 15, 2013

GTCR, a leading private equity firm, announced today it has completed the
previously announced sale of its portfolio company, Six3 Systems ("Six3"), to
CACI International Inc (NYSE: CACI, "CACI"), a leading provider of information
solutions and services to government customers, for $820 million.

Headquartered in McLean, Virginia, Six3 is a high-end national security and
defense intelligence services provider focused on developing and acquiring
specialized capabilities that cater to the intelligence community, Department
of Defense and civilian security agencies. Six3 was formed in July 2009 by
industry veteran Bob Coleman in partnership with GTCR. Through a series of
four acquisitions, Six3 has established a strong presence in the areas of
intelligence surveillance and reconnaissance, intelligence operations and
cyber security.

Goldman, Sachs & Co. and J.P. Morgan Securities LLC served as Six3's financial
advisors and Kirkland & Ellis LLP provided legal counsel.

About GTCR

Founded in 1980, GTCR is a leading private equity firm focused on investing in
growth companies in the Financial Services & Technology, Healthcare and
Information Services & Technology industries. The Chicago-based firm pioneered
The Leaders Strategy™ - finding and partnering with management leaders in core
domains to identify, acquire and build market-leading companies through
transformational acquisitions and organic growth. Since its inception, GTCR
has invested more than $10 billion in over 200 companies. For more
information, please visit www.gtcr.com.

About Six3 Systems, Inc.

Six3 provides strategic solutions to U.S. Government agencies in the
Intelligence, Defense, and Civilian communities. Six3’s mission is to provide
subject matter expertise and strategic solutions for national security
agencies and critical missions. For more information, please visit
www.six3systems.com.

About CACI

CACI provides information solutions and services in support of national
security missions and government transformation for Intelligence, Defense, and
Federal Civilian customers. A member of the Fortune 1000 Largest Companies and
the Russell 2000 Index, CACI provides dynamic careers for approximately 15,000
employees working in over 120 offices worldwide. Visit www.caci.com.

Contact:

For GTCR
Eileen Rochford, 312-953-3305
eileenr@theharbingergroup.com