EL SEGUNDO, Calif., June 27 – Computer Sciences Corporation (NYSE: CSC) today announced that it has expanded its information technology (IT) outsourcing relationship with Raytheon Company (NYSE: RTN) by signing a five-year, $48 million IT outsourcing contract with Raytheon Technical Services Company LLC (RTSC).

Under the agreement, CSC will manage the following services: help desk, data center, electronic messaging, desktops, servers, data and voice networks, and staff augmentation in the area of applications development and maintenance. CSC will provide full services at five RTSC sites and selected services at additional RTSC sites. RTSC has headquarters in Reston, Va., and operates in 50 states, 38 countries and all seven continents.

"This expansion evidences the strength of our relationship with Raytheon," said CSC Chairman and Chief Executive Officer Van B. Honeycutt. "CSC’s extensive experience in the defense industry and our proven ability to deliver results that meet our clients’ evolving needs are the foundation of this new agreement."

About Raytheon

Raytheon Company, with 2004 sales of $20.2 billion, is an industry leader in defense and government electronics, space, information technology, technical services and special-mission aircraft. Headquartered in Waltham, Mass., Raytheon employs 80,000 people worldwide.

About CSC

Founded in 1959, Computer Sciences Corporation is a leading global IT services company. CSC's mission is to provide customers in industry and government with solutions crafted to meet their specific challenges and enable them to profit from the advanced use of technology.

With approximately 79,000 employees, CSC provides innovative solutions for customers around the world by applying leading technologies and CSC’s own advanced capabilities. These include systems design and integration; IT and business process outsourcing; applications software development; Web and application hosting; and management consulting. Headquartered in El Segundo, Calif., CSC reported revenue of $14.1 billion from continuing operations for the 12 months ended April 1, 2005. For more information, visit the company’s Web site at www.csc.com.