For Immediate Release
For More Information Contact:
Barron Beneski (703) 406-5528
Public and Investor Relations



-- Experienced Industry Executive to Lead Critical Function for Program Execution --

(Dulles, VA 10 April 2012) - Orbital Sciences Corporation (NYSE: ORB), one of the world's leading space technology companies, today announced that Ms. Stephanie Foster has joined the company as Senior Vice President of Supply Chain Management. Orbital's supplier network includes dozens of domestic and international suppliers that provide the company with critical components and subsystems that Orbital engineers and integrates to produce some of the world's most reliable and cost-effective satellites and launch vehicles.

"Supply chain management is an area of intense focus for the company as we continue to refine our operations in order to reduce the cost of our products to offer our customers the broadest array of innovative and affordable small- and medium-class satellites and launch vehicles," said Mr. Jim Judd, Orbital's Senior Vice President of Technical Operations. "Stephanie's extensive knowledge in both commercial aerospace and defense supply chain management is a great fit for Orbital. Her experience will allow us to leverage our supply base for greater efficiency and effectiveness."

Ms. Foster joins Orbital from Raytheon Company where she was the Vice President of Integrated Supply Chain overseeing all subcontracts, procurement, compliance, small business, supply chain technology, logistics and asset management for a $3.5 billion business unit of Raytheon with multiple locations throughout the world.

Ms. Foster holds a Masters degree in Business Administration (MBA) from Arizona State University and a Bachelor of Science (BS) degree in Business/Information Systems from the University of Phoenix.

About Orbital

Orbital develops and manufactures small- and medium-class rockets and space systems for commercial, military and civil government customers. The company's primary products are satellites and launch vehicles, including low-Earth orbit, geosynchronous-Earth orbit and planetary exploration spacecraft for communications, remote sensing, scientific and defense missions; human-rated space systems for Earth-orbit, lunar and other missions; ground- and air-launched rockets that deliver satellites into orbit; and missile defense systems that are used as interceptor and target vehicles. Orbital also provides satellite subsystems and space-related technical services to U.S. Government agencies and laboratories.

More information about Orbital can be found at

# # #