Orbital Sciences Corporation announced today that Mr.
W. Jean Floyd has been appointed as the new Senior Vice President and
General Manager of its Transportation Management Systems (TMS)
division located in Columbia, MD. The company also announced that Mr.
Bhavesh Patel has been named as the new Senior Director of Finance at
TMS.

Mr. Floyd previously headed Orbital’s Technical Operations group
that is responsible for the engineering and manufacturing resources
and processes of the company’s commercial and government satellite
programs. In his new role, Mr. Floyd will provide leadership to the
TMS division, with a particular emphasis on product quality and timely
delivery to customers. Mr. Floyd has a demonstrated track record of
successfully leading large-scale engineering organizations that
produce highly reliable products.

“The change in the division’s leadership is an extension of the
company’s intense focus on total customer satisfaction through on-time
product deliveries and outstanding operational reliability in its core
markets for satellites and launch vehicles,” said Mr. James R.
Thompson, Orbital’s Vice Chairman and Chief Operating Officer.

Mr. Floyd joined Orbital in 1990 as a Launch Controller for the
Pegasus space launch vehicle program. He served as the Pegasus Program
Manager in his next assignment and, more recently, as the Chandler, AZ
Operations Plant Manager and Deputy General Manager for the company’s
Launch Systems Group. Prior to joining Orbital, Mr. Floyd was a
Captain in the United States Air Force and was a Launch Controller and
Program Manager for the Titan space launch vehicle. He holds a B.S. in
Mechanical Engineering from the United States Air Force Academy and a
Masters Degree in Engineering Management from Florida Institute of
Technology.

Supporting Mr. Floyd in his new position, Mr. Patel will be
responsible for program finance, cost accounting, and financial
planning and reporting at TMS. Previously, he was Assistant Director
of Orbital’s Technical Operations Group and also worked on corporate
strategic and financial projects for the company. Mr. Patel, who
joined Orbital in 1995, holds a B. Eng. in Aerospace Systems
Engineering from Southampton University (UK), a M.S. in Aeronautics
and Astronautics from Massachusetts Institute of Technology and a
Masters in Business Administration from Harvard Business School.

About Orbital

Orbital develops and manufactures small space systems for
commercial, civil government and military customers. The company’s
primary products are satellites and launch vehicles, including
low-orbit, geostationary and planetary spacecraft for communications,
remote sensing and scientific missions; ground- and air-launched
rockets that deliver satellites into orbit; and missile defense
boosters that are used as interceptor and target vehicles. Orbital
also offers space-related technical services to government agencies
and develops and builds satellite-based transportation management
systems for public transit agencies and private vehicle fleet
operators.

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

Note to Editors: A biography and high-resolution photograph of Mr.
Floyd is available on Orbital’s web site at:
http://www.orbital.com/Investor/ExecutiveProfiles/jfloyd.html