CSC Joins Mission Support Alliance LLC to Support Department of Energy Contract

FALLS CHURCH, Va., May 19 /PRNewswire/ -- CSC (NYSE: CSC) today announced that
it is joining the Mission Support Alliance LLC team as a subcontractor on the
Department of Energy's recently announced award of a Mission Support Contract,
which will provide site-wide services to support clean-up work at its Hanford
site in southeastern Washington state. The contract value for CSC has not been
finalized.

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The Mission Support award is a cost-plus-award fee contract, with a total
value of approximately $3 billion over ten years, including a five-year base
period with options to extend for another five. The Mission Support Contract
provides site-wide services in the areas of safety, security, environment,
infrastructure, utilities, business management, information management and
portfolio management.

"We are extremely pleased to join the Mission Support Alliance in performing
this important work at Hanford, the site of the world's largest environmental
clean-up project," said Alan Weakley, president of CSC North American Public
Sector's Applied Technology Group. "We are committed to delivering results
for a safe, environmentally effective and secure operation."

About CSC
CSC is a global leader in providing technology-enabled solutions and services
through three primary lines of business. These include Business Solutions &
Services, Global Outsourcing Services and the North American Public Sector.
CSC's advanced capabilities include systems design and integration,
information technology and business process outsourcing, applications software
development, Web and application hosting, mission support and management
consulting. Headquartered in Falls Church, Va., CSC has approximately 92,000
employees and reported revenue of $17.1 billion for the 12 months ended Jan.
2, 2009. For more information, visit the company's Web site at www.csc.com.

SOURCE CSC

Chuck Taylor, Director, Office of Communications, North American Public
Sector, +1-703-641-3430, ctaylor26@csc.com, or Rich Venn, Manager, Media
Relations, Corporate, +1-310-615-3926, rvenn@csc.com, or Bryan Brady, Vice
President, Investor Relations, Corporate, +1-703-641-3000,
investorrelations@csc.com, all of CSC