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Chris McDonald and George Valuikas move rocket support beams outside of the a Horizontal Integration Facility in Wallops Island, Va., where the OrbitalSciences Corp. develops rockets. (Linda Davidson/The Washington Post)

Public companies and financial services

Orbital Sciences

Orbital, which develops small- and medium-class satellites and supports space exploration, said its government business has been gaining momentum as some agencies move away from large, complex and costly procurements. The company is the industrial partner to three of five finalists for NASA’s mission to deliver cargo to the International Space Station. The firm announced in September that it had won a $135 million NASA contract to design and build the Ice, Cloud and land Elevation Satellite-2.

Trivia

Orbital's workforce includes 1,900 engineers and scientists.

21839 Atlantic Blvd.

Dulles Va., 20166

703-406-5000

http://www.orbital.com/

Founded: 1982

Chairman and CEO: David W. Thompson

Revenue: $1,294,580

Assets: $1,062,540

Employees (local): 3,700 (1,750)

NOTE: Our methodology for the rankings.