DULLES, Va., Sept. 25 /PRNewswire/ -- Orbital Sciences Corporation (NYSE: ORB) announced today that the U.S. General Services Administration (GSA) has awarded a five-year indefinite delivery/indefinite quantity (ID/IQ) contract for professional engineering services to the company's Technical Services Division (TSD). The contract, which includes an option for a second five-year term, could potentially produce revenues of about $20 million. Orbital's TSD, which is located in Greenbelt, Maryland, has served as a consistent source of long-term growth for the company, with annual revenues increasing more than 100% over the past five years, from about $30 million in 1995 to approximately $70 million in 1999.

As a primary purchasing agent for the U.S. Government, the GSA uses a type of contract vehicle called a "schedule" to allow federal agencies to procure engineering services from commercial suppliers that have been previously selected through a competitive process. Under the GSA schedule, government agencies and their authorized contractors can, in a streamlined and cost- effective manner, identify and choose qualified companies to perform specific tasks.

"As part of the GSA's Professional Engineering Services Schedule, Orbital's first-rate technical services will now be readily available to a wider range of government agencies than ever before," said Mr. Richard J. Hicks, Vice President of Orbital's TSD. "We anticipate that this contract will help open the door to new business opportunities, while maintaining or increasing our already sizable engineering services work with NASA and the Department of Defense."

The GSA contract covers mechanical and electrical engineering and related multi-discipline engineering tasks. It positions Orbital's TSD to compete for additional professional engineering services business in all phases of program development, including strategic planning; concept definition and requirements analysis; system design; engineering and integration; test and evaluation; and logistics. In addition, Orbital's TSD also offers complete acquisition and life cycle management, including procurement, project management and configuration management.

Orbital TSD provides technical and management support to U.S. Government agencies, typically supplying engineers, scientists, technicians and other professionals to work with a customer's technical staff. Its capabilities encompass a broad range of aerospace and related engineering functions at the system, subsystem and design levels. These core engineering capabilities include: electrical (analog and digital); optical and opto-mechanical; thermal; stress; structural; guidance, navigation and control; electro- mechanical; RF and communications; software; safety; reliability; parts; and quality/system assurance. TSD also offers a space-qualified electrical manufacturing facility, an extensive CAD/CAE/CAM design staff and facility and a state-of-the-art optical clean room.

Orbital is one of the largest space technology and satellite services companies in the world, with 1999 total enterprise revenues (including revenues from unconsolidated affiliates) of approximately $915 million. The company, headquartered in Dulles, Virginia, employs over 5,000 people at major facilities in the U.S., Canada and several overseas locations. Orbital is the world's leading manufacturer of low-cost space systems, including satellites and space robotics, launch vehicles, electronics and sensors, satellite ground systems and related digital infrastructure. Its Magellan subsidiary is a pioneer in satellite-based navigation and communications products for consumer and industrial markets. Through its ORBCOMM and ORBIMAGE affiliates and ORBNAV subsidiary, Orbital is also a major operator of satellite-based networks that provide data communications, high-resolution imagery and automotive information services to customers around the world. SOURCE Orbital Sciences Corporation

/NOTE TO EDITORS: To learn more about Orbital and its Technical Services Division, as well as to access its recent press releases, please visit the web site at http://www.orbital.com/

CONTACT: Barron Beneski of Orbital Sciences Corporation, 703-406-5000, or Beneski.barron@orbital.com/