Orbital Sciences
Corporation announced today that it has been awarded the James S.
Cogswell Industrial Security Achievement Award by the U.S. Department of
Defense. As one of only seven government contracting companies nationwide to
be recognized for this prestigious award, Orbital joins an elite group that
represents the top one-tenth of one percent of the over 11,000 government
contractors that participate in the industrial security program and are
eligible for the Cogswell award. Orbital’s Dulles, VA facility, home of the
company’s corporate headquarters, satellite design and manufacturing, and
space launch vehicle program management, was selected for the award.

“Orbital’s selection for the Cogswell award reflects our total commitment
to principles of industrial security as outlined by the Defense Security
Service’s National Industrial Security Program,” said Mr. Mark Bitterman, the
company’s Senior Vice President of Government Relations. “On behalf of our
entire company, I want to commend Vincent Frammartino, our Senior Manager of
Corporate and Industrial Security, and his team of professionals for their
outstanding work.”

Each year, the Defense Security Service recognizes outstanding
participation and compliance with the National Industrial Security Program by
contractor facilities with the Cogswell award. The criteria for the award
include a company’s focus on industrial security excellence, adherence to the
National Industrial Security Program guidelines and setting standards to be
emulated by other contractors participating in the program.

Orbital is one of the world’s leading developers and manufacturers of
affordable space systems for commercial, civil government and military
customers. The company’s primary products include low-orbit, geosynchronous
and planetary spacecraft for communications, scientific and remote sensing
missions; ground- and air-launched rockets that deliver satellites into orbit;
and missile defense boosters that are used as target and interceptor vehicles.
Orbital also offers space-related technical services to government agencies
and develops and builds satellite-based transportation management systems for
public transit and public works agencies, as well as private vehicle fleet

More information about Orbital can be found at http://www.orbital.com

CONTACT: Barron Beneski, Public and Investor Relations, of Orbital
Sciences Corporation, +1-703-406-5528, or Beneski.barron@orbital.com